2949131247 has 4 divisors (see below), whose sum is σ = 3932175000. Its totient is φ = 1966087496.

The previous prime is 2949131243. The next prime is 2949131279. The reversal of 2949131247 is 7421319492.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2949131247 - 2² = 2949131243 is a prime.

It is a super-2 number, since 2×2949131247² = 17394750224063550018, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2949131199 and 2949131208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2949131243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 491521872 + ... + 491521877.

It is an arithmetic number, because the mean of its divisors is an integer number (983043750).

Almost surely, 2^2949131247 is an apocalyptic number.

2949131247 is a deficient number, since it is larger than the sum of its proper divisors (983043753).

2949131247 is an equidigital number, since it uses as much as digits as its factorization.

2949131247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983043752.

The product of its digits is 108864, while the sum is 42.

The square root of 2949131247 is about 54305.9043475017. The cubic root of 2949131247 is about 1434.0513418980.

The spelling of 2949131247 in words is "two billion, nine hundred forty-nine million, one hundred thirty-one thousand, two hundred forty-seven".