401767969 has 2 divisors, whose sum is σ = 401767970. Its totient is φ = 401767968.

The previous prime is 401767957. The next prime is 401767991. The reversal of 401767969 is 969767104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 364313569 + 37454400 = 19087^2 + 6120^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401767969 is a prime.

It is a super-2 number, since 2×401767969² = 322835001828769922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (401767169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200883984 + 200883985.

It is an arithmetic number, because the mean of its divisors is an integer number (200883985).

Almost surely, 2^401767969 is an apocalyptic number.

It is an amenable number.

401767969 is a deficient number, since it is larger than the sum of its proper divisors (1).

401767969 is an equidigital number, since it uses as much as digits as its factorization.

401767969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 571536, while the sum is 49.

The square root of 401767969 is about 20044.1504933484. The cubic root of 401767969 is about 737.8902465536.

The spelling of 401767969 in words is "four hundred one million, seven hundred sixty-seven thousand, nine hundred sixty-nine".