90349139 has 2 divisors, whose sum is σ = 90349140. Its totient is φ = 90349138.

The previous prime is 90349111. The next prime is 90349141. The reversal of 90349139 is 93194309.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90349139 - 2²⁴ = 73571923 is a prime.

It is a Sophie Germain prime.

Together with 90349141, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90349109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45174569 + 45174570.

It is an arithmetic number, because the mean of its divisors is an integer number (45174570).

Almost surely, 2^90349139 is an apocalyptic number.

90349139 is a deficient number, since it is larger than the sum of its proper divisors (1).

90349139 is an equidigital number, since it uses as much as digits as its factorization.

90349139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26244, while the sum is 38.

The square root of 90349139 is about 9505.2164099509. The cubic root of 90349139 is about 448.7192206862.

The spelling of 90349139 in words is "ninety million, three hundred forty-nine thousand, one hundred thirty-nine".