90421313 has 8 divisors (see below), whose sum is σ = 91795680. Its totient is φ = 89056960.

The previous prime is 90421301. The next prime is 90421369. The reversal of 90421313 is 31312409.

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 90421313 - 2⁴ = 90421297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90421013) 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, 16793 + ... + 21513.

It is an arithmetic number, because the mean of its divisors is an integer number (11474460).

Almost surely, 2^90421313 is an apocalyptic number.

It is an amenable number.

90421313 is a deficient number, since it is larger than the sum of its proper divisors (1374367).

90421313 is a wasteful number, since it uses less digits than its factorization.

90421313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5007.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 90421313 is about 9509.0121989616. The cubic root of 90421313 is about 448.8386730004.

The spelling of 90421313 in words is "ninety million, four hundred twenty-one thousand, three hundred thirteen".