99999507 has 8 divisors (see below), whose sum is σ = 134627584. Its totient is φ = 66018888.

The previous prime is 99999481. The next prime is 99999509. The reversal of 99999507 is 70599999.

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

It is not a de Polignac number, because 99999507 - 2¹¹ = 99997459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99999509) 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, 161503 + ... + 162120.

It is an arithmetic number, because the mean of its divisors is an integer number (16828448).

Almost surely, 2^99999507 is an apocalyptic number.

99999507 is a deficient number, since it is larger than the sum of its proper divisors (34628077).

99999507 is a wasteful number, since it uses less digits than its factorization.

99999507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323729.

The product of its (nonzero) digits is 2066715, while the sum is 57.

The square root of 99999507 is about 9999.9753499696. The cubic root of 99999507 is about 464.1581205923.

The spelling of 99999507 in words is "ninety-nine million, nine hundred ninety-nine thousand, five hundred seven".