90413773 has 4 divisors (see below), whose sum is σ = 91896028. Its totient is φ = 88931520.

The previous prime is 90413767. The next prime is 90413777. The reversal of 90413773 is 37731409.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15539364 + 74874409 = 3942^2 + 8653^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90413773 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 (90413777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 741036 + ... + 741157.

It is an arithmetic number, because the mean of its divisors is an integer number (22974007).

Almost surely, 2^90413773 is an apocalyptic number.

It is an amenable number.

90413773 is a deficient number, since it is larger than the sum of its proper divisors (1482255).

90413773 is a wasteful number, since it uses less digits than its factorization.

90413773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482254.

The product of its (nonzero) digits is 15876, while the sum is 34.

The square root of 90413773 is about 9508.6157246994. The cubic root of 90413773 is about 448.8261968206.

The spelling of 90413773 in words is "ninety million, four hundred thirteen thousand, seven hundred seventy-three".