999913407 has 8 divisors (see below), whose sum is σ = 1333872384. Its totient is φ = 666281688.

The previous prime is 999913381. The next prime is 999913451. The reversal of 999913407 is 704319999.

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

It is not a de Polignac number, because 999913407 - 2⁷ = 999913279 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 999913407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999913807) 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, 74593 + ... + 86970.

It is an arithmetic number, because the mean of its divisors is an integer number (166734048).

Almost surely, 2^999913407 is an apocalyptic number.

999913407 is a deficient number, since it is larger than the sum of its proper divisors (333958977).

999913407 is a wasteful number, since it uses less digits than its factorization.

999913407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163629.

The product of its (nonzero) digits is 551124, while the sum is 51.

The square root of 999913407 is about 31621.4074164956. The cubic root of 999913407 is about 999.9711348335.

The spelling of 999913407 in words is "nine hundred ninety-nine million, nine hundred thirteen thousand, four hundred seven".