9931404 has 48 divisors (see below), whose sum is σ = 26707968. Its totient is φ = 2813568.

The previous prime is 9931399. The next prime is 9931447. The reversal of 9931404 is 4041399.

9931404 = T₁₆₈₁ + T₁₆₈₂ + ... + T₁₆₈₇.

It is a super-2 number, since 2×9931404² = 197265570822432, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11077 + ... + 11939.

It is an arithmetic number, because the mean of its divisors is an integer number (556416).

Almost surely, 2^9931404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9931404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13353984).

9931404 is an abundant number, since it is smaller than the sum of its proper divisors (16776564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9931404 is a wasteful number, since it uses less digits than its factorization.

9931404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1014 (or 1012 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 9931404 is about 3151.4130164103. The cubic root of 9931404 is about 214.9497196286.

The spelling of 9931404 in words is "nine million, nine hundred thirty-one thousand, four hundred four".