857400097 has 2 divisors, whose sum is σ = 857400098. Its totient is φ = 857400096.

The previous prime is 857400067. The next prime is 857400113. The reversal of 857400097 is 790004758.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 604717281 + 252682816 = 24591^2 + 15896^2 .

It is a cyclic number.

It is not a de Polignac number, because 857400097 - 2⁷ = 857399969 is a prime.

It is not a weakly prime, because it can be changed into another prime (857400067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428700048 + 428700049.

It is an arithmetic number, because the mean of its divisors is an integer number (428700049).

Almost surely, 2^857400097 is an apocalyptic number.

It is an amenable number.

857400097 is a deficient number, since it is larger than the sum of its proper divisors (1).

857400097 is an equidigital number, since it uses as much as digits as its factorization.

857400097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 857400097 is about 29281.3950658093. The cubic root of 857400097 is about 950.0092693463.

The spelling of 857400097 in words is "eight hundred fifty-seven million, four hundred thousand, ninety-seven".