2991402479 has 8 divisors (see below), whose sum is σ = 3228990912. Its totient is φ = 2754882720.

The previous prime is 2991402473. The next prime is 2991402481. The reversal of 2991402479 is 9742041992.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2991402479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2991402473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261344 + ... + 272549.

It is an arithmetic number, because the mean of its divisors is an integer number (403623864).

Almost surely, 2^2991402479 is an apocalyptic number.

2991402479 is a deficient number, since it is larger than the sum of its proper divisors (237588433).

2991402479 is a wasteful number, since it uses less digits than its factorization.

2991402479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534337.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 2991402479 is about 54693.7151691124. The cubic root of 2991402479 is about 1440.8704997388.

The spelling of 2991402479 in words is "two billion, nine hundred ninety-one million, four hundred two thousand, four hundred seventy-nine".