91442929 has 2 divisors, whose sum is σ = 91442930. Its totient is φ = 91442928.

The previous prime is 91442909. The next prime is 91442933. The reversal of 91442929 is 92924419.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64641600 + 26801329 = 8040^2 + 5177^2 .

It is a cyclic number.

It is not a de Polignac number, because 91442929 - 2¹⁵ = 91410161 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 91442891 and 91442900.

It is not a weakly prime, because it can be changed into another prime (91442909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45721464 + 45721465.

It is an arithmetic number, because the mean of its divisors is an integer number (45721465).

Almost surely, 2^91442929 is an apocalyptic number.

It is an amenable number.

91442929 is a deficient number, since it is larger than the sum of its proper divisors (1).

91442929 is an equidigital number, since it uses as much as digits as its factorization.

91442929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 40.

The square root of 91442929 is about 9562.5796205836. The cubic root of 91442929 is about 450.5227324621.

The spelling of 91442929 in words is "ninety-one million, four hundred forty-two thousand, nine hundred twenty-nine".