401279 has 2 divisors, whose sum is σ = 401280. Its totient is φ = 401278.

The previous prime is 401243. The next prime is 401287. The reversal of 401279 is 972104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 401279 - 2¹² = 397183 is a prime.

It is a super-2 number, since 2×401279² = 322049671682, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200639 + 200640.

It is an arithmetic number, because the mean of its divisors is an integer number (200640).

2⁴⁰¹²⁷⁹ is an apocalyptic number.

401279 is a deficient number, since it is larger than the sum of its proper divisors (1).

401279 is an equidigital number, since it uses as much as digits as its factorization.

401279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 401279 is about 633.4658633265. The cubic root of 401279 is about 73.7590776914.

The spelling of 401279 in words is "four hundred one thousand, two hundred seventy-nine".