11949431 has 8 divisors (see below), whose sum is σ = 12912144. Its totient is φ = 10992960.

The previous prime is 11949389. The next prime is 11949437. The reversal of 11949431 is 13494911.

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

It is a cyclic number.

It is not a de Polignac number, because 11949431 - 2¹⁰ = 11948407 is a prime.

It is a super-2 number, since 2×11949431² = 285577802447522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11949437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2915 + ... + 5691.

It is an arithmetic number, because the mean of its divisors is an integer number (1614018).

Almost surely, 2^11949431 is an apocalyptic number.

11949431 is a deficient number, since it is larger than the sum of its proper divisors (962713).

11949431 is a wasteful number, since it uses less digits than its factorization.

11949431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3121.

The product of its digits is 3888, while the sum is 32.

The square root of 11949431 is about 3456.7949027965. The cubic root of 11949431 is about 228.6208009603.

The spelling of 11949431 in words is "eleven million, nine hundred forty-nine thousand, four hundred thirty-one".