401937979 has 2 divisors, whose sum is σ = 401937980. Its totient is φ = 401937978.

The previous prime is 401937961. The next prime is 401937983. The reversal of 401937979 is 979739104.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 401937979 - 2¹¹ = 401935931 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (401937959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200968989 + 200968990.

It is an arithmetic number, because the mean of its divisors is an integer number (200968990).

Almost surely, 2^401937979 is an apocalyptic number.

401937979 is a deficient number, since it is larger than the sum of its proper divisors (1).

401937979 is an equidigital number, since it uses as much as digits as its factorization.

401937979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 428652, while the sum is 49.

The square root of 401937979 is about 20048.3909329402. The cubic root of 401937979 is about 737.9943124490.

The spelling of 401937979 in words is "four hundred one million, nine hundred thirty-seven thousand, nine hundred seventy-nine".