401364893 has 2 divisors, whose sum is σ = 401364894. Its totient is φ = 401364892.

The previous prime is 401364869. The next prime is 401364983. The reversal of 401364893 is 398463104.

Together with next prime (401364983) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 254785444 + 146579449 = 15962^2 + 12107^2 .

It is a cyclic number.

It is not a de Polignac number, because 401364893 - 2⁸ = 401364637 is a prime.

It is a super-2 number, since 2×401364893² = 322187554665802898, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401364823) 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, 200682446 + 200682447.

It is an arithmetic number, because the mean of its divisors is an integer number (200682447).

Almost surely, 2^401364893 is an apocalyptic number.

It is an amenable number.

401364893 is a deficient number, since it is larger than the sum of its proper divisors (1).

401364893 is an equidigital number, since it uses as much as digits as its factorization.

401364893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 401364893 is about 20034.0932662299. The cubic root of 401364893 is about 737.6433997895.

The spelling of 401364893 in words is "four hundred one million, three hundred sixty-four thousand, eight hundred ninety-three".