401853623 has 4 divisors (see below), whose sum is σ = 402948960. Its totient is φ = 400758288.

The previous prime is 401853611. The next prime is 401853643. The reversal of 401853623 is 326358104.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 401853623 - 2²² = 397659319 is a prime.

It is a super-2 number, since 2×401853623² = 322972668636452258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 401853623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401853643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 547118 + ... + 547851.

It is an arithmetic number, because the mean of its divisors is an integer number (100737240).

Almost surely, 2^401853623 is an apocalyptic number.

401853623 is a deficient number, since it is larger than the sum of its proper divisors (1095337).

401853623 is a wasteful number, since it uses less digits than its factorization.

401853623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095336.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 401853623 is about 20046.2870128111. The cubic root of 401853623 is about 737.9426804335.

The spelling of 401853623 in words is "four hundred one million, eight hundred fifty-three thousand, six hundred twenty-three".