401879377 has 2 divisors, whose sum is σ = 401879378. Its totient is φ = 401879376.

The previous prime is 401879369. The next prime is 401879389. The reversal of 401879377 is 773978104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 356303376 + 45576001 = 18876^2 + 6751^2 .

It is a cyclic number.

It is not a de Polignac number, because 401879377 - 2³ = 401879369 is a prime.

It is not a weakly prime, because it can be changed into another prime (401879327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200939688 + 200939689.

It is an arithmetic number, because the mean of its divisors is an integer number (200939689).

Almost surely, 2^401879377 is an apocalyptic number.

It is an amenable number.

401879377 is a deficient number, since it is larger than the sum of its proper divisors (1).

401879377 is an equidigital number, since it uses as much as digits as its factorization.

401879377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 296352, while the sum is 46.

The square root of 401879377 is about 20046.9293658655. The cubic root of 401879377 is about 737.9584445233.

The spelling of 401879377 in words is "four hundred one million, eight hundred seventy-nine thousand, three hundred seventy-seven".