76393969 has 2 divisors, whose sum is σ = 76393970. Its totient is φ = 76393968.

The previous prime is 76393963. The next prime is 76393979. The reversal of 76393969 is 96939367.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48441600 + 27952369 = 6960^2 + 5287^2 .

It is a cyclic number.

It is not a de Polignac number, because 76393969 - 2⁷ = 76393841 is a prime.

It is a super-2 number, since 2×76393969² = 11672076999145922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (76393963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38196984 + 38196985.

It is an arithmetic number, because the mean of its divisors is an integer number (38196985).

Almost surely, 2^76393969 is an apocalyptic number.

It is an amenable number.

76393969 is a deficient number, since it is larger than the sum of its proper divisors (1).

76393969 is an equidigital number, since it uses as much as digits as its factorization.

76393969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1653372, while the sum is 52.

The square root of 76393969 is about 8740.3643516732. The cubic root of 76393969 is about 424.3130197894.

The spelling of 76393969 in words is "seventy-six million, three hundred ninety-three thousand, nine hundred sixty-nine".