931998942 has 144 divisors (see below), whose sum is σ = 2453742720. Its totient is φ = 250296480.

The previous prime is 931998937. The next prime is 931998953. The reversal of 931998942 is 249899139.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5206609 + ... + 5206787.

It is an arithmetic number, because the mean of its divisors is an integer number (17039880).

Almost surely, 2^931998942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 931998942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1226871360).

931998942 is an abundant number, since it is smaller than the sum of its proper divisors (1521743778).

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

931998942 is a wasteful number, since it uses less digits than its factorization.

931998942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299 (or 265 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 54.

The square root of 931998942 is about 30528.6577169714. The cubic root of 931998942 is about 976.7988503288.

The spelling of 931998942 in words is "nine hundred thirty-one million, nine hundred ninety-eight thousand, nine hundred forty-two".