91130407 has 2 divisors, whose sum is σ = 91130408. Its totient is φ = 91130406.

The previous prime is 91130363. The next prime is 91130411. The reversal of 91130407 is 70403119.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91130407 - 2¹⁵ = 91097639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91130437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45565203 + 45565204.

It is an arithmetic number, because the mean of its divisors is an integer number (45565204).

Almost surely, 2^91130407 is an apocalyptic number.

91130407 is a deficient number, since it is larger than the sum of its proper divisors (1).

91130407 is an equidigital number, since it uses as much as digits as its factorization.

91130407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 91130407 is about 9546.2247511778. The cubic root of 91130407 is about 450.0089002355.

The spelling of 91130407 in words is "ninety-one million, one hundred thirty thousand, four hundred seven".