8792497421 has 2 divisors, whose sum is σ = 8792497422. Its totient is φ = 8792497420.

The previous prime is 8792497397. The next prime is 8792497429. The reversal of 8792497421 is 1247942978.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7891657225 + 900840196 = 88835^2 + 30014^2 .

It is a cyclic number.

It is not a de Polignac number, because 8792497421 - 2¹⁰ = 8792496397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8792497429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4396248710 + 4396248711.

It is an arithmetic number, because the mean of its divisors is an integer number (4396248711).

Almost surely, 2^8792497421 is an apocalyptic number.

It is an amenable number.

8792497421 is a deficient number, since it is larger than the sum of its proper divisors (1).

8792497421 is an equidigital number, since it uses as much as digits as its factorization.

8792497421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2032128, while the sum is 53.

The square root of 8792497421 is about 93768.3177891125. The cubic root of 8792497421 is about 2063.9733396148.

The spelling of 8792497421 in words is "eight billion, seven hundred ninety-two million, four hundred ninety-seven thousand, four hundred twenty-one".