401967539 has 2 divisors, whose sum is σ = 401967540. Its totient is φ = 401967538.

The previous prime is 401967523. The next prime is 401967551. The reversal of 401967539 is 935769104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 401967539 - 2⁴ = 401967523 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 401967539.

It is not a weakly prime, because it can be changed into another prime (401967509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200983769 + 200983770.

It is an arithmetic number, because the mean of its divisors is an integer number (200983770).

Almost surely, 2^401967539 is an apocalyptic number.

401967539 is a deficient number, since it is larger than the sum of its proper divisors (1).

401967539 is an equidigital number, since it uses as much as digits as its factorization.

401967539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 401967539 is about 20049.1281356572. The cubic root of 401967539 is about 738.0124036125.

The spelling of 401967539 in words is "four hundred one million, nine hundred sixty-seven thousand, five hundred thirty-nine".