89949931 has 2 divisors, whose sum is σ = 89949932. Its totient is φ = 89949930.

The previous prime is 89949901. The next prime is 89949989. The reversal of 89949931 is 13994998.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89949931 - 2¹¹ = 89947883 is a prime.

It is a super-2 number, since 2×89949931² = 16181980173809522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (89949901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44974965 + 44974966.

It is an arithmetic number, because the mean of its divisors is an integer number (44974966).

Almost surely, 2^89949931 is an apocalyptic number.

89949931 is a deficient number, since it is larger than the sum of its proper divisors (1).

89949931 is an equidigital number, since it uses as much as digits as its factorization.

89949931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 629856, while the sum is 52.

The square root of 89949931 is about 9484.1937453850. The cubic root of 89949931 is about 448.0573557386.

The spelling of 89949931 in words is "eighty-nine million, nine hundred forty-nine thousand, nine hundred thirty-one".