8420253297 has 4 divisors (see below), whose sum is σ = 11227004400. Its totient is φ = 5613502196.

The previous prime is 8420253293. The next prime is 8420253301. The reversal of 8420253297 is 7923520248.

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 an interprime number because it is at equal distance from previous prime (8420253293) and next prime (8420253301).

It is a cyclic number.

It is not a de Polignac number, because 8420253297 - 2² = 8420253293 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8420253293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1403375547 + ... + 1403375552.

It is an arithmetic number, because the mean of its divisors is an integer number (2806751100).

Almost surely, 2^8420253297 is an apocalyptic number.

It is an amenable number.

8420253297 is a deficient number, since it is larger than the sum of its proper divisors (2806751103).

8420253297 is a wasteful number, since it uses less digits than its factorization.

8420253297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2806751102.

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 8420253297 is about 91761.9381715535. The cubic root of 8420253297 is about 2034.4251624310.

The spelling of 8420253297 in words is "eight billion, four hundred twenty million, two hundred fifty-three thousand, two hundred ninety-seven".