999954731 has 2 divisors, whose sum is σ = 999954732. Its totient is φ = 999954730.

The previous prime is 999954719. The next prime is 999954733. The reversal of 999954731 is 137459999.

It is a strong prime.

It is an emirp because it is prime and its reverse (137459999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 999954731 - 2²⁶ = 932845867 is a prime.

It is a super-2 number, since 2×999954731² = 1999818928098564722, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 999954733, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (999954733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499977365 + 499977366.

It is an arithmetic number, because the mean of its divisors is an integer number (499977366).

Almost surely, 2^999954731 is an apocalyptic number.

999954731 is a deficient number, since it is larger than the sum of its proper divisors (1).

999954731 is an equidigital number, since it uses as much as digits as its factorization.

999954731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2755620, while the sum is 56.

The square root of 999954731 is about 31622.0608278461. The cubic root of 999954731 is about 999.9849101056.

The spelling of 999954731 in words is "nine hundred ninety-nine million, nine hundred fifty-four thousand, seven hundred thirty-one".