99990707 has 8 divisors (see below), whose sum is σ = 101259072. Its totient is φ = 98728000.

The previous prime is 99990703. The next prime is 99990731. The reversal of 99990707 is 70709999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99990707 - 2² = 99990703 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99990703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42383 + ... + 44679.

It is an arithmetic number, because the mean of its divisors is an integer number (12657384).

Almost surely, 2^99990707 is an apocalyptic number.

99990707 is a deficient number, since it is larger than the sum of its proper divisors (1268365).

99990707 is a wasteful number, since it uses less digits than its factorization.

99990707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2829.

The product of its (nonzero) digits is 321489, while the sum is 50.

The square root of 99990707 is about 9999.5353392045. The cubic root of 99990707 is about 464.1445048209.

The spelling of 99990707 in words is "ninety-nine million, nine hundred ninety thousand, seven hundred seven".