401293861 has 2 divisors, whose sum is σ = 401293862. Its totient is φ = 401293860.

The previous prime is 401293847. The next prime is 401293873. The reversal of 401293861 is 168392104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 401240961 + 52900 = 20031^2 + 230^2 .

It is a cyclic number.

It is not a de Polignac number, because 401293861 - 2²⁵ = 367739429 is a prime.

It is a super-2 number, since 2×401293861² = 322073525752574642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401293831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200646930 + 200646931.

It is an arithmetic number, because the mean of its divisors is an integer number (200646931).

Almost surely, 2^401293861 is an apocalyptic number.

It is an amenable number.

401293861 is a deficient number, since it is larger than the sum of its proper divisors (1).

401293861 is an equidigital number, since it uses as much as digits as its factorization.

401293861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 401293861 is about 20032.3204097778. The cubic root of 401293861 is about 737.5998821342.

The spelling of 401293861 in words is "four hundred one million, two hundred ninety-three thousand, eight hundred sixty-one".