401677457 has 2 divisors, whose sum is σ = 401677458. Its totient is φ = 401677456.

The previous prime is 401677453. The next prime is 401677481. The reversal of 401677457 is 754776104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 368025856 + 33651601 = 19184^2 + 5801^2 .

It is a cyclic number.

It is not a de Polignac number, because 401677457 - 2² = 401677453 is a prime.

It is a super-2 number, since 2×401677457² = 322689558923973698, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (401677453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200838728 + 200838729.

It is an arithmetic number, because the mean of its divisors is an integer number (200838729).

Almost surely, 2^401677457 is an apocalyptic number.

It is an amenable number.

401677457 is a deficient number, since it is larger than the sum of its proper divisors (1).

401677457 is an equidigital number, since it uses as much as digits as its factorization.

401677457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 164640, while the sum is 41.

The square root of 401677457 is about 20041.8925503556. The cubic root of 401677457 is about 737.8348307057.

The spelling of 401677457 in words is "four hundred one million, six hundred seventy-seven thousand, four hundred fifty-seven".