99000427 has 4 divisors (see below), whose sum is σ = 99020376. Its totient is φ = 98980480.

The previous prime is 99000413. The next prime is 99000443. The reversal of 99000427 is 72400099.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99000427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99000467) 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, 3948 + ... + 14614.

It is an arithmetic number, because the mean of its divisors is an integer number (24755094).

Almost surely, 2^99000427 is an apocalyptic number.

99000427 is a deficient number, since it is larger than the sum of its proper divisors (19949).

99000427 is a wasteful number, since it uses less digits than its factorization.

99000427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19948.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 99000427 is about 9949.8958286004. The cubic root of 99000427 is about 462.6071660115.

The spelling of 99000427 in words is "ninety-nine million, four hundred twenty-seven", and thus it is an aban number.