90789401 has 8 divisors (see below), whose sum is σ = 99445320. Its totient is φ = 82501888.

The previous prime is 90789389. The next prime is 90789409. The reversal of 90789401 is 10498709.

It can be written as a sum of positive squares in 4 ways, for example, as 30261001 + 60528400 = 5501^2 + 7780^2 .

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 90789401 - 2²⁶ = 23680537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90789409) 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, 91586 + ... + 92571.

It is an arithmetic number, because the mean of its divisors is an integer number (12430665).

Almost surely, 2^90789401 is an apocalyptic number.

It is an amenable number.

90789401 is a deficient number, since it is larger than the sum of its proper divisors (8655919).

90789401 is a wasteful number, since it uses less digits than its factorization.

90789401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184203.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 90789401 is about 9528.3472333873. The cubic root of 90789401 is about 449.4468941052.

The spelling of 90789401 in words is "ninety million, seven hundred eighty-nine thousand, four hundred one".