90481049 has 4 divisors (see below), whose sum is σ = 91497780. Its totient is φ = 89464320.

The previous prime is 90481003. The next prime is 90481067. The reversal of 90481049 is 94018409.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94018409 = 859 ⋅109451.

It can be written as a sum of positive squares in 2 ways, for example, as 54096025 + 36385024 = 7355^2 + 6032^2 .

It is a cyclic number.

It is not a de Polignac number, because 90481049 - 2¹⁶ = 90415513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90481649) 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, 508232 + ... + 508409.

It is an arithmetic number, because the mean of its divisors is an integer number (22874445).

Almost surely, 2^90481049 is an apocalyptic number.

It is an amenable number.

90481049 is a deficient number, since it is larger than the sum of its proper divisors (1016731).

90481049 is a wasteful number, since it uses less digits than its factorization.

90481049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016730.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 90481049 is about 9512.1527006246. The cubic root of 90481049 is about 448.9374916082.

The spelling of 90481049 in words is "ninety million, four hundred eighty-one thousand, forty-nine".