4156969 has 2 divisors, whose sum is σ = 4156970. Its totient is φ = 4156968.

The previous prime is 4156937. The next prime is 4156981. The reversal of 4156969 is 9696514.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2518569 + 1638400 = 1587^2 + 1280^2 .

It is a cyclic number.

It is not a de Polignac number, because 4156969 - 2⁵ = 4156937 is a prime.

It is a super-2 number, since 2×4156969² = 34560782533922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4156909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2078484 + 2078485.

It is an arithmetic number, because the mean of its divisors is an integer number (2078485).

Almost surely, 2^4156969 is an apocalyptic number.

It is an amenable number.

4156969 is a deficient number, since it is larger than the sum of its proper divisors (1).

4156969 is an equidigital number, since it uses as much as digits as its factorization.

4156969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 40.

The square root of 4156969 is about 2038.8646350359. The cubic root of 4156969 is about 160.7899605334.

The spelling of 4156969 in words is "four million, one hundred fifty-six thousand, nine hundred sixty-nine".