90413791 has 8 divisors (see below), whose sum is σ = 97644960. Its totient is φ = 83222112.

The previous prime is 90413777. The next prime is 90413833. The reversal of 90413791 is 19731409.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90413791 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 (90413731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5020 + ... + 14353.

It is an arithmetic number, because the mean of its divisors is an integer number (12205620).

Almost surely, 2^90413791 is an apocalyptic number.

90413791 is a deficient number, since it is larger than the sum of its proper divisors (7231169).

90413791 is a wasteful number, since it uses less digits than its factorization.

90413791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19745.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 90413791 is about 9508.6166712093. The cubic root of 90413791 is about 448.8262266054.

It can be divided in two parts, 90413 and 791, that added together give a square (91204 = 302²).

The spelling of 90413791 in words is "ninety million, four hundred thirteen thousand, seven hundred ninety-one".