994991507 has 2 divisors, whose sum is σ = 994991508. Its totient is φ = 994991506.

The previous prime is 994991497. The next prime is 994991539. The reversal of 994991507 is 705199499.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 994991507 - 2²⁴ = 978214291 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (994991597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497495753 + 497495754.

It is an arithmetic number, because the mean of its divisors is an integer number (497495754).

Almost surely, 2^994991507 is an apocalyptic number.

994991507 is a deficient number, since it is larger than the sum of its proper divisors (1).

994991507 is an equidigital number, since it uses as much as digits as its factorization.

994991507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 918540, while the sum is 53.

The square root of 994991507 is about 31543.4859677874. The cubic root of 994991507 is about 998.3277073294.

The spelling of 994991507 in words is "nine hundred ninety-four million, nine hundred ninety-one thousand, five hundred seven".