855928497 has 8 divisors (see below), whose sum is σ = 1143430560. Its totient is φ = 569522720.

The previous prime is 855928487. The next prime is 855928499. The reversal of 855928497 is 794829558.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 855928497 - 2⁴ = 855928481 is a prime.

It is a super-2 number, since 2×855928497² = 1465227183953358018, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (855928499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272247 + ... + 275372.

It is an arithmetic number, because the mean of its divisors is an integer number (142928820).

Almost surely, 2^855928497 is an apocalyptic number.

It is an amenable number.

855928497 is a deficient number, since it is larger than the sum of its proper divisors (287502063).

855928497 is a wasteful number, since it uses less digits than its factorization.

855928497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548143.

The product of its digits is 7257600, while the sum is 57.

The square root of 855928497 is about 29256.2556900229. The cubic root of 855928497 is about 949.4654414616.

The spelling of 855928497 in words is "eight hundred fifty-five million, nine hundred twenty-eight thousand, four hundred ninety-seven".