97403857 has 2 divisors, whose sum is σ = 97403858. Its totient is φ = 97403856.

The previous prime is 97403843. The next prime is 97403927. The reversal of 97403857 is 75830479.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89132481 + 8271376 = 9441^2 + 2876^2 .

It is an emirp because it is prime and its reverse (75830479) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97403857 - 2¹⁹ = 96879569 is a prime.

It is a super-2 number, since 2×97403857² = 18975022716952898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (97403807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48701928 + 48701929.

It is an arithmetic number, because the mean of its divisors is an integer number (48701929).

Almost surely, 2^97403857 is an apocalyptic number.

It is an amenable number.

97403857 is a deficient number, since it is larger than the sum of its proper divisors (1).

97403857 is an equidigital number, since it uses as much as digits as its factorization.

97403857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 97403857 is about 9869.3392382672. The cubic root of 97403857 is about 460.1068702543.

The spelling of 97403857 in words is "ninety-seven million, four hundred three thousand, eight hundred fifty-seven".