11949147 has 32 divisors (see below), whose sum is σ = 21427200. Its totient is φ = 6424704.

The previous prime is 11949143. The next prime is 11949149. The reversal of 11949147 is 74194911.

It is not a de Polignac number, because 11949147 - 2² = 11949143 is a prime.

It is a super-2 number, since 2×11949147² = 285564228055218, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11949143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1354 + ... + 5072.

It is an arithmetic number, because the mean of its divisors is an integer number (669600).

Almost surely, 2^11949147 is an apocalyptic number.

11949147 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

11949147 is a deficient number, since it is larger than the sum of its proper divisors (9478053).

11949147 is a wasteful number, since it uses less digits than its factorization.

11949147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3752 (or 3746 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 11949147 is about 3456.7538240378. The cubic root of 11949147 is about 228.6189897494.

The spelling of 11949147 in words is "eleven million, nine hundred forty-nine thousand, one hundred forty-seven".