2990691947 has 2 divisors, whose sum is σ = 2990691948. Its totient is φ = 2990691946.

The previous prime is 2990691937. The next prime is 2990691971. The reversal of 2990691947 is 7491960992.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2990691947 - 2⁶ = 2990691883 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2990691892 and 2990691901.

It is not a weakly prime, because it can be changed into another prime (2990691937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1495345973 + 1495345974.

It is an arithmetic number, because the mean of its divisors is an integer number (1495345974).

Almost surely, 2^2990691947 is an apocalyptic number.

2990691947 is a deficient number, since it is larger than the sum of its proper divisors (1).

2990691947 is an equidigital number, since it uses as much as digits as its factorization.

2990691947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2204496, while the sum is 56.

The square root of 2990691947 is about 54687.2192289935. The cubic root of 2990691947 is about 1440.7564099237.

The spelling of 2990691947 in words is "two billion, nine hundred ninety million, six hundred ninety-one thousand, nine hundred forty-seven".