90093870 has 40 divisors (see below), whose sum is σ = 242254584. Its totient is φ = 24024816.

The previous prime is 90093859. The next prime is 90093881. The reversal of 90093870 is 7839009.

It is an interprime number because it is at equal distance from previous prime (90093859) and next prime (90093881).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 54804 + ... + 56423.

Almost surely, 2^90093870 is an apocalyptic number.

90093870 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

90093870 is an abundant number, since it is smaller than the sum of its proper divisors (152160714).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90093870 is a wasteful number, since it uses less digits than its factorization.

90093870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111246 (or 111237 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 90093870 is about 9491.7790745466. The cubic root of 90093870 is about 448.2962240244.

The spelling of 90093870 in words is "ninety million, ninety-three thousand, eight hundred seventy".