90751399 has 8 divisors (see below), whose sum is σ = 95182560. Its totient is φ = 86360736.

The previous prime is 90751373. The next prime is 90751447. The reversal of 90751399 is 99315709.

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 90751399 - 2⁹ = 90750887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90751319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5484 + ... + 14545.

It is an arithmetic number, because the mean of its divisors is an integer number (11897820).

Almost surely, 2^90751399 is an apocalyptic number.

90751399 is a deficient number, since it is larger than the sum of its proper divisors (4431161).

90751399 is a wasteful number, since it uses less digits than its factorization.

90751399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20249.

The product of its (nonzero) digits is 76545, while the sum is 43.

The square root of 90751399 is about 9526.3528698028. The cubic root of 90751399 is about 449.3841765622.

The spelling of 90751399 in words is "ninety million, seven hundred fifty-one thousand, three hundred ninety-nine".