99401679 has 12 divisors (see below), whose sum is σ = 154625016. Its totient is φ = 61170192.

The previous prime is 99401677. The next prime is 99401683. The reversal of 99401679 is 97610499.

It is not a de Polignac number, because 99401679 - 2¹ = 99401677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99401677) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 424677 + ... + 424910.

It is an arithmetic number, because the mean of its divisors is an integer number (12885418).

Almost surely, 2^99401679 is an apocalyptic number.

99401679 is a deficient number, since it is larger than the sum of its proper divisors (55223337).

99401679 is a wasteful number, since it uses less digits than its factorization.

99401679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849606 (or 849603 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 99401679 is about 9970.0390671251. The cubic root of 99401679 is about 463.2313109164.

The spelling of 99401679 in words is "ninety-nine million, four hundred one thousand, six hundred seventy-nine".