999904007 has 2 divisors, whose sum is σ = 999904008. Its totient is φ = 999904006.

The previous prime is 999903973. The next prime is 999904063. The reversal of 999904007 is 700409999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 999904007 - 2¹⁰ = 999902983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999904207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499952003 + 499952004.

It is an arithmetic number, because the mean of its divisors is an integer number (499952004).

Almost surely, 2^999904007 is an apocalyptic number.

999904007 is a deficient number, since it is larger than the sum of its proper divisors (1).

999904007 is an equidigital number, since it uses as much as digits as its factorization.

999904007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 183708, while the sum is 47.

The square root of 999904007 is about 31621.2587826608. The cubic root of 999904007 is about 999.9680013094.

The spelling of 999904007 in words is "nine hundred ninety-nine million, nine hundred four thousand, seven".