90673899 has 4 divisors (see below), whose sum is σ = 120898536. Its totient is φ = 60449264.

The previous prime is 90673897. The next prime is 90673901. The reversal of 90673899 is 99837609.

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

It is an interprime number because it is at equal distance from previous prime (90673897) and next prime (90673901).

It is a cyclic number.

It is not a de Polignac number, because 90673899 - 2¹ = 90673897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90673897) 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, 15112314 + ... + 15112319.

It is an arithmetic number, because the mean of its divisors is an integer number (30224634).

Almost surely, 2^90673899 is an apocalyptic number.

90673899 is a deficient number, since it is larger than the sum of its proper divisors (30224637).

90673899 is a wasteful number, since it uses less digits than its factorization.

90673899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30224636.

The product of its (nonzero) digits is 734832, while the sum is 51.

The square root of 90673899 is about 9522.2843372796. The cubic root of 90673899 is about 449.2562182324.

The spelling of 90673899 in words is "ninety million, six hundred seventy-three thousand, eight hundred ninety-nine".