401380079 has 2 divisors, whose sum is σ = 401380080. Its totient is φ = 401380078.

The previous prime is 401380069. The next prime is 401380087. The reversal of 401380079 is 970083104.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401380079 is a prime.

It is a super-2 number, since 2×401380079² = 322211935636092482, which contains 22 as substring.

It is equal to p_21405749 and since 401380079 and 21405749 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401380019) 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, 200690039 + 200690040.

It is an arithmetic number, because the mean of its divisors is an integer number (200690040).

Almost surely, 2^401380079 is an apocalyptic number.

401380079 is a deficient number, since it is larger than the sum of its proper divisors (1).

401380079 is an equidigital number, since it uses as much as digits as its factorization.

401380079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 401380079 is about 20034.4722665709. The cubic root of 401380079 is about 737.6527028050.

The spelling of 401380079 in words is "four hundred one million, three hundred eighty thousand, seventy-nine".