928427997 has 8 divisors (see below), whose sum is σ = 1414747456. Its totient is φ = 530530272.

The previous prime is 928427891. The next prime is 928427999. The reversal of 928427997 is 799724829.

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

It is not a de Polignac number, because 928427997 - 2⁸ = 928427741 is a prime.

It is a super-2 number, since 2×928427997² = 1723957091226864018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (928427999) 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, 22105408 + ... + 22105449.

It is an arithmetic number, because the mean of its divisors is an integer number (176843432).

Almost surely, 2^928427997 is an apocalyptic number.

It is an amenable number.

928427997 is a deficient number, since it is larger than the sum of its proper divisors (486319459).

928427997 is a wasteful number, since it uses less digits than its factorization.

928427997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44210867.

The product of its digits is 4572288, while the sum is 57.

The square root of 928427997 is about 30470.1164585894. The cubic root of 928427997 is about 975.5497218203.

The spelling of 928427997 in words is "nine hundred twenty-eight million, four hundred twenty-seven thousand, nine hundred ninety-seven".