90480939 has 4 divisors (see below), whose sum is σ = 120641256. Its totient is φ = 60320624.

The previous prime is 90480937. The next prime is 90480961. The reversal of 90480939 is 93908409.

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

It is a cyclic number.

It is not a de Polignac number, because 90480939 - 2¹ = 90480937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90480939.

It is not an unprimeable number, because it can be changed into a prime (90480937) 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, 15080154 + ... + 15080159.

It is an arithmetic number, because the mean of its divisors is an integer number (30160314).

Almost surely, 2^90480939 is an apocalyptic number.

90480939 is a deficient number, since it is larger than the sum of its proper divisors (30160317).

90480939 is a wasteful number, since it uses less digits than its factorization.

90480939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30160316.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 90480939 is about 9512.1469185458. The cubic root of 90480939 is about 448.9373096801.

It can be divided in two parts, 90480 and 939, that added together give a palindrome (91419).

The spelling of 90480939 in words is "ninety million, four hundred eighty thousand, nine hundred thirty-nine".