990474576279 has 8 divisors (see below), whose sum is σ = 1320850037760. Its totient is φ = 660207749496.

The previous prime is 990474576241. The next prime is 990474576317. The reversal of 990474576279 is 972675474099.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (990474576241) and next prime (990474576317).

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

It is not a de Polignac number, because 990474576279 - 2⁷ = 990474576151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990474576229) 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, 27137397 + ... + 27173870.

It is an arithmetic number, because the mean of its divisors is an integer number (165106254720).

Almost surely, 2^990474576279 is an apocalyptic number.

990474576279 is a deficient number, since it is larger than the sum of its proper divisors (330375461481).

990474576279 is a wasteful number, since it uses less digits than its factorization.

990474576279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54317349.

The product of its (nonzero) digits is 240045120, while the sum is 69.

The spelling of 990474576279 in words is "nine hundred ninety billion, four hundred seventy-four million, five hundred seventy-six thousand, two hundred seventy-nine".