857400495 has 64 divisors (see below), whose sum is σ = 1596948480. Its totient is φ = 384749568.

The previous prime is 857400493. The next prime is 857400497. The reversal of 857400495 is 594004758.

It is an interprime number because it is at equal distance from previous prime (857400493) and next prime (857400497).

It is not a de Polignac number, because 857400495 - 2¹ = 857400493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857400493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1506571 + ... + 1507139.

It is an arithmetic number, because the mean of its divisors is an integer number (24952320).

Almost surely, 2^857400495 is an apocalyptic number.

857400495 is a deficient number, since it is larger than the sum of its proper divisors (739547985).

857400495 is a wasteful number, since it uses less digits than its factorization.

857400495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824.

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 857400495 is about 29281.4018619328. The cubic root of 857400495 is about 950.0094163425.

The spelling of 857400495 in words is "eight hundred fifty-seven million, four hundred thousand, four hundred ninety-five".