401027400389 has 24 divisors (see below), whose sum is σ = 510070017600. Its totient is φ = 311776879680.

The previous prime is 401027400349. The next prime is 401027400401. The reversal of 401027400389 is 983004720104.

It is not a de Polignac number, because 401027400389 - 2¹² = 401027396293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401027400349) 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 in 23 ways as a sum of consecutive naturals, for example, 610784 + ... + 1084025.

It is an arithmetic number, because the mean of its divisors is an integer number (21252917400).

Almost surely, 2^401027400389 is an apocalyptic number.

401027400389 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

401027400389 is a deficient number, since it is larger than the sum of its proper divisors (109042617211).

401027400389 is a wasteful number, since it uses less digits than its factorization.

401027400389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1695273 (or 1695266 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 401027400389 in words is "four hundred one billion, twenty-seven million, four hundred thousand, three hundred eighty-nine".