90435139 has 8 divisors (see below), whose sum is σ = 91148288. Its totient is φ = 89725320.

The previous prime is 90435131. The next prime is 90435151. The reversal of 90435139 is 93153409.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90435139 - 2³ = 90435131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90435131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82654 + ... + 83740.

It is an arithmetic number, because the mean of its divisors is an integer number (11393536).

Almost surely, 2^90435139 is an apocalyptic number.

90435139 is a deficient number, since it is larger than the sum of its proper divisors (713149).

90435139 is a wasteful number, since it uses less digits than its factorization.

90435139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1665.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 90435139 is about 9509.7391657185. The cubic root of 90435139 is about 448.8615486072.

The spelling of 90435139 in words is "ninety million, four hundred thirty-five thousand, one hundred thirty-nine".