4151969 has 2 divisors, whose sum is σ = 4151970. Its totient is φ = 4151968.

The previous prime is 4151963. The next prime is 4151971. The reversal of 4151969 is 9691514.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2930944 + 1221025 = 1712^2 + 1105^2 .

It is a cyclic number.

It is not a de Polignac number, because 4151969 - 2⁸ = 4151713 is a prime.

It is a super-2 number, since 2×4151969² = 34477693153922, which contains 22 as substring.

Together with 4151971, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4151963) 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 as a sum of consecutive naturals, namely, 2075984 + 2075985.

It is an arithmetic number, because the mean of its divisors is an integer number (2075985).

Almost surely, 2^4151969 is an apocalyptic number.

It is an amenable number.

4151969 is a deficient number, since it is larger than the sum of its proper divisors (1).

4151969 is an equidigital number, since it uses as much as digits as its factorization.

4151969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9720, while the sum is 35.

The square root of 4151969 is about 2037.6380934798. The cubic root of 4151969 is about 160.7254686445.

The spelling of 4151969 in words is "four million, one hundred fifty-one thousand, nine hundred sixty-nine".