401951385 has 48 divisors (see below), whose sum is σ = 767257920. Its totient is φ = 193038720.

The previous prime is 401951371. The next prime is 401951467. The reversal of 401951385 is 583159104.

It is not a de Polignac number, because 401951385 - 2⁴ = 401951369 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49171 + ... + 56759.

It is an arithmetic number, because the mean of its divisors is an integer number (15984540).

Almost surely, 2^401951385 is an apocalyptic number.

401951385 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

401951385 is a deficient number, since it is larger than the sum of its proper divisors (365306535).

401951385 is a wasteful number, since it uses less digits than its factorization.

401951385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7718 (or 7715 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 401951385 is about 20048.7252711987. The cubic root of 401951385 is about 738.0025172320.

The spelling of 401951385 in words is "four hundred one million, nine hundred fifty-one thousand, three hundred eighty-five".