401864293 has 2 divisors, whose sum is σ = 401864294. Its totient is φ = 401864292.

The previous prime is 401864251. The next prime is 401864297. The reversal of 401864293 is 392468104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 316911204 + 84953089 = 17802^2 + 9217^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401864293 is a prime.

It is a super-2 number, since 2×401864293² = 322989819976779698, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401864297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200932146 + 200932147.

It is an arithmetic number, because the mean of its divisors is an integer number (200932147).

Almost surely, 2^401864293 is an apocalyptic number.

It is an amenable number.

401864293 is a deficient number, since it is larger than the sum of its proper divisors (1).

401864293 is an equidigital number, since it uses as much as digits as its factorization.

401864293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 401864293 is about 20046.5531451170. The cubic root of 401864293 is about 737.9492116497.

The spelling of 401864293 in words is "four hundred one million, eight hundred sixty-four thousand, two hundred ninety-three".