9926478023 has 32 divisors (see below), whose sum is σ = 13091023872. Its totient is φ = 7297171200.

The previous prime is 9926478017. The next prime is 9926478049. The reversal of 9926478023 is 3208746299.

It is not a de Polignac number, because 9926478023 - 2⁸ = 9926477767 is a prime.

It is a super-2 number, since 2×9926478023² (a number of 21 digits) 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 (9926478073) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90893 + ... + 167673.

It is an arithmetic number, because the mean of its divisors is an integer number (409094496).

Almost surely, 2^9926478023 is an apocalyptic number.

9926478023 is a deficient number, since it is larger than the sum of its proper divisors (3164545849).

9926478023 is a wasteful number, since it uses less digits than its factorization.

9926478023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76895.

The product of its (nonzero) digits is 1306368, while the sum is 50.

The square root of 9926478023 is about 99631.7119345041. The cubic root of 9926478023 is about 2149.1417539319.

The spelling of 9926478023 in words is "nine billion, nine hundred twenty-six million, four hundred seventy-eight thousand, twenty-three".