4156931 has 4 divisors (see below), whose sum is σ = 4193832. Its totient is φ = 4120032.

The previous prime is 4156921. The next prime is 4156937. The reversal of 4156931 is 1396514.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4156931 is a prime.

It is a super-2 number, since 2×4156931² = 34560150677522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4156894 and 4156903.

It is not an unprimeable number, because it can be changed into a prime (4156937) 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 3 ways as a sum of consecutive naturals, for example, 18281 + ... + 18506.

It is an arithmetic number, because the mean of its divisors is an integer number (1048458).

Almost surely, 2^4156931 is an apocalyptic number.

4156931 is a deficient number, since it is larger than the sum of its proper divisors (36901).

4156931 is a wasteful number, since it uses less digits than its factorization.

4156931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36900.

The product of its digits is 3240, while the sum is 29.

The square root of 4156931 is about 2038.8553161026. The cubic root of 4156931 is about 160.7894705901.

The spelling of 4156931 in words is "four million, one hundred fifty-six thousand, nine hundred thirty-one".