401820595 has 32 divisors (see below), whose sum is σ = 546061824. Its totient is φ = 281299200.

The previous prime is 401820583. The next prime is 401820647. The reversal of 401820595 is 595028104.

It is not a de Polignac number, because 401820595 - 2⁵ = 401820563 is a prime.

It is a super-2 number, since 2×401820595² = 322919581132308050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 401820595.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 166719 + ... + 169111.

It is an arithmetic number, because the mean of its divisors is an integer number (17064432).

Almost surely, 2^401820595 is an apocalyptic number.

401820595 is a deficient number, since it is larger than the sum of its proper divisors (144241229).

401820595 is a wasteful number, since it uses less digits than its factorization.

401820595 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2523.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 401820595 is about 20045.4632024306. The cubic root of 401820595 is about 737.9224629237.

Adding to 401820595 its reverse (595028104), we get a palindrome (996848699).

The spelling of 401820595 in words is "four hundred one million, eight hundred twenty thousand, five hundred ninety-five".