90520351239 has 8 divisors (see below), whose sum is σ = 120695624320. Its totient is φ = 60345989496.

The previous prime is 90520351153. The next prime is 90520351301. The reversal of 90520351239 is 93215302509.

It is a happy number.

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

It is not a de Polignac number, because 90520351239 - 2⁹ = 90520350727 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90520351197 and 90520351206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90520352239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53592 + ... + 428850.

It is an arithmetic number, because the mean of its divisors is an integer number (15086953040).

Almost surely, 2^90520351239 is an apocalyptic number.

90520351239 is a deficient number, since it is larger than the sum of its proper divisors (30175273081).

90520351239 is a wasteful number, since it uses less digits than its factorization.

90520351239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455669.

The product of its (nonzero) digits is 72900, while the sum is 39.

The spelling of 90520351239 in words is "ninety billion, five hundred twenty million, three hundred fifty-one thousand, two hundred thirty-nine".