401421677 has 2 divisors, whose sum is σ = 401421678. Its totient is φ = 401421676.

The previous prime is 401421667. The next prime is 401421701. The reversal of 401421677 is 776124104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 285407236 + 116014441 = 16894^2 + 10771^2 .

It is a cyclic number.

It is not a de Polignac number, because 401421677 - 2⁴ = 401421661 is a prime.

It is a super-2 number, since 2×401421677² = 322278725530984658, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401421617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200710838 + 200710839.

It is an arithmetic number, because the mean of its divisors is an integer number (200710839).

Almost surely, 2^401421677 is an apocalyptic number.

It is an amenable number.

401421677 is a deficient number, since it is larger than the sum of its proper divisors (1).

401421677 is an equidigital number, since it uses as much as digits as its factorization.

401421677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 401421677 is about 20035.5104002868. The cubic root of 401421677 is about 737.6781847349.

The spelling of 401421677 in words is "four hundred one million, four hundred twenty-one thousand, six hundred seventy-seven".