93999690 has 96 divisors (see below), whose sum is σ = 256628736. Its totient is φ = 24753600.

The previous prime is 93999679. The next prime is 93999739. The reversal of 93999690 is 9699939.

It is a super-2 number, since 2×93999690² = 17671883440192200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 245239 + ... + 245621.

It is an arithmetic number, because the mean of its divisors is an integer number (2673216).

Almost surely, 2^93999690 is an apocalyptic number.

93999690 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 93999690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128314368).

93999690 is an abundant number, since it is smaller than the sum of its proper divisors (162629046).

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

93999690 is a wasteful number, since it uses less digits than its factorization.

93999690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506 (or 494 counting only the distinct ones).

The product of its (nonzero) digits is 1062882, while the sum is 54.

The square root of 93999690 is about 9695.3437277902. The cubic root of 93999690 is about 454.6830945476.

The spelling of 93999690 in words is "ninety-three million, nine hundred ninety-nine thousand, six hundred ninety".