90533479 has 4 divisors (see below), whose sum is σ = 90553240. Its totient is φ = 90513720.

The previous prime is 90533477. The next prime is 90533489. The reversal of 90533479 is 97433509.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97433509 = 1481 ⋅65789.

It is a cyclic number.

It is not a de Polignac number, because 90533479 - 2¹ = 90533477 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 (90533477) 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, 949 + ... + 13489.

It is an arithmetic number, because the mean of its divisors is an integer number (22638310).

Almost surely, 2^90533479 is an apocalyptic number.

90533479 is a deficient number, since it is larger than the sum of its proper divisors (19761).

90533479 is a wasteful number, since it uses less digits than its factorization.

90533479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19760.

The product of its (nonzero) digits is 102060, while the sum is 40.

The square root of 90533479 is about 9514.9082496890. The cubic root of 90533479 is about 449.0241883917.

The spelling of 90533479 in words is "ninety million, five hundred thirty-three thousand, four hundred seventy-nine".