91007629 has 2 divisors, whose sum is σ = 91007630. Its totient is φ = 91007628.

The previous prime is 91007621. The next prime is 91007633. The reversal of 91007629 is 92670019.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88454025 + 2553604 = 9405^2 + 1598^2 .

It is a cyclic number.

It is not a de Polignac number, because 91007629 - 2³ = 91007621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91007594 and 91007603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91007621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45503814 + 45503815.

It is an arithmetic number, because the mean of its divisors is an integer number (45503815).

Almost surely, 2^91007629 is an apocalyptic number.

It is an amenable number.

91007629 is a deficient number, since it is larger than the sum of its proper divisors (1).

91007629 is an equidigital number, since it uses as much as digits as its factorization.

91007629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 91007629 is about 9539.7918740400. The cubic root of 91007629 is about 449.8067136984.

The spelling of 91007629 in words is "ninety-one million, seven thousand, six hundred twenty-nine".