3931445898 has 24 divisors (see below), whose sum is σ = 8562275748. Its totient is φ = 1303690752.

The previous prime is 3931445897. The next prime is 3931445911. The reversal of 3931445898 is 8985441393.

3931445898 is a `hidden beast` number, since 3 + 93 + 14 + 458 + 98 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3886649649 + 44796249 = 62343^2 + 6693^2 .

It is not an unprimeable number, because it can be changed into a prime (3931445893) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 562365 + ... + 569312.

Almost surely, 2^3931445898 is an apocalyptic number.

3931445898 is an abundant number, since it is smaller than the sum of its proper divisors (4630829850).

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

3931445898 is a wasteful number, since it uses less digits than its factorization.

3931445898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1131878 (or 1131875 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 54.

The square root of 3931445898 is about 62701.2431934168. The cubic root of 3931445898 is about 1578.2801745335.

The spelling of 3931445898 in words is "three billion, nine hundred thirty-one million, four hundred forty-five thousand, eight hundred ninety-eight".