8770421497 has 4 divisors (see below), whose sum is σ = 8773470720. Its totient is φ = 8767372276.

The previous prime is 8770421477. The next prime is 8770421501. The reversal of 8770421497 is 7941240778.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7941240778 = 2 ⋅3970620389.

It is a cyclic number.

It is not a de Polignac number, because 8770421497 - 2⁷ = 8770421369 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8770421497.

It is not an unprimeable number, because it can be changed into a prime (8770421477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1520293 + ... + 1526050.

It is an arithmetic number, because the mean of its divisors is an integer number (2193367680).

Almost surely, 2^8770421497 is an apocalyptic number.

It is an amenable number.

8770421497 is a deficient number, since it is larger than the sum of its proper divisors (3049223).

8770421497 is a wasteful number, since it uses less digits than its factorization.

8770421497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3049222.

The product of its (nonzero) digits is 790272, while the sum is 49.

The square root of 8770421497 is about 93650.5285462928. The cubic root of 8770421497 is about 2062.2445056128.

The spelling of 8770421497 in words is "eight billion, seven hundred seventy million, four hundred twenty-one thousand, four hundred ninety-seven".