401373457 has 2 divisors, whose sum is σ = 401373458. Its totient is φ = 401373456.

The previous prime is 401373449. The next prime is 401373509. The reversal of 401373457 is 754373104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 401240961 + 132496 = 20031^2 + 364^2 .

It is a cyclic number.

It is not a de Polignac number, because 401373457 - 2³ = 401373449 is a prime.

It is a super-2 number, since 2×401373457² = 322201303968261698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (401373857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200686728 + 200686729.

It is an arithmetic number, because the mean of its divisors is an integer number (200686729).

Almost surely, 2^401373457 is an apocalyptic number.

It is an amenable number.

401373457 is a deficient number, since it is larger than the sum of its proper divisors (1).

401373457 is an equidigital number, since it uses as much as digits as its factorization.

401373457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35280, while the sum is 34.

The square root of 401373457 is about 20034.3070007425. The cubic root of 401373457 is about 737.6486461653.

The spelling of 401373457 in words is "four hundred one million, three hundred seventy-three thousand, four hundred fifty-seven".