2949139947 has 16 divisors (see below), whose sum is σ = 4240742688. Its totient is φ = 1812249600.

The previous prime is 2949139939. The next prime is 2949139951. The reversal of 2949139947 is 7499319492.

It is not a de Polignac number, because 2949139947 - 2³ = 2949139939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2949139927) 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 15 ways as a sum of consecutive naturals, for example, 26598 + ... + 81275.

It is an arithmetic number, because the mean of its divisors is an integer number (265046418).

Almost surely, 2^2949139947 is an apocalyptic number.

2949139947 is a deficient number, since it is larger than the sum of its proper divisors (1291602741).

2949139947 is a wasteful number, since it uses less digits than its factorization.

2949139947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108590.

The product of its digits is 4408992, while the sum is 57.

The square root of 2949139947 is about 54305.9844492299. The cubic root of 2949139947 is about 1434.0527520573.

The spelling of 2949139947 in words is "two billion, nine hundred forty-nine million, one hundred thirty-nine thousand, nine hundred forty-seven".