90990707 has 2 divisors, whose sum is σ = 90990708. Its totient is φ = 90990706.

The previous prime is 90990701. The next prime is 90990727. The reversal of 90990707 is 70709909.

It is a weak prime.

It is an emirp because it is prime and its reverse (70709909) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90990707 - 2¹⁰ = 90989683 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90990701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45495353 + 45495354.

It is an arithmetic number, because the mean of its divisors is an integer number (45495354).

Almost surely, 2^90990707 is an apocalyptic number.

90990707 is a deficient number, since it is larger than the sum of its proper divisors (1).

90990707 is an equidigital number, since it uses as much as digits as its factorization.

90990707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35721, while the sum is 41.

The square root of 90990707 is about 9538.9049161840. The cubic root of 90990707 is about 449.7788328818.

The spelling of 90990707 in words is "ninety million, nine hundred ninety thousand, seven hundred seven".