8770421 has 4 divisors (see below), whose sum is σ = 9567744. Its totient is φ = 7973100.

The previous prime is 8770379. The next prime is 8770423. The reversal of 8770421 is 1240778.

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.

It is a cyclic number.

It is not a de Polignac number, because 8770421 - 2⁶ = 8770357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8770423) 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, 398645 + ... + 398666.

It is an arithmetic number, because the mean of its divisors is an integer number (2391936).

Almost surely, 2^8770421 is an apocalyptic number.

It is an amenable number.

8770421 is a deficient number, since it is larger than the sum of its proper divisors (797323).

8770421 is a wasteful number, since it uses less digits than its factorization.

8770421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797322.

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 8770421 is about 2961.4896589386. The cubic root of 8770421 is about 206.2244466659.

The spelling of 8770421 in words is "eight million, seven hundred seventy thousand, four hundred twenty-one".