999931441 has 2 divisors, whose sum is σ = 999931442. Its totient is φ = 999931440.

The previous prime is 999931433. The next prime is 999931529. The reversal of 999931441 is 144139999.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 915365025 + 84566416 = 30255^2 + 9196^2 .

It is a cyclic number.

It is not a de Polignac number, because 999931441 - 2³ = 999931433 is a prime.

It is not a weakly prime, because it can be changed into another prime (999931741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499965720 + 499965721.

It is an arithmetic number, because the mean of its divisors is an integer number (499965721).

Almost surely, 2^999931441 is an apocalyptic number.

It is an amenable number.

999931441 is a deficient number, since it is larger than the sum of its proper divisors (1).

999931441 is an equidigital number, since it uses as much as digits as its factorization.

999931441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 314928, while the sum is 49.

The square root of 999931441 is about 31621.6925701329. The cubic root of 999931441 is about 999.9771464777.

The spelling of 999931441 in words is "nine hundred ninety-nine million, nine hundred thirty-one thousand, four hundred forty-one".