401870505 has 32 divisors (see below), whose sum is σ = 662505984. Its totient is φ = 207864576.

The previous prime is 401870477. The next prime is 401870519. The reversal of 401870505 is 505078104.

It is not a de Polignac number, because 401870505 - 2⁵ = 401870473 is a prime.

It is a super-2 number, since 2×401870505² = 322999805577910050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 202699 + ... + 204671.

It is an arithmetic number, because the mean of its divisors is an integer number (20703312).

Almost surely, 2^401870505 is an apocalyptic number.

It is an amenable number.

401870505 is a deficient number, since it is larger than the sum of its proper divisors (260635479).

401870505 is a wasteful number, since it uses less digits than its factorization.

401870505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2385.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 401870505 is about 20046.7080838725. The cubic root of 401870505 is about 737.9530140252.

The spelling of 401870505 in words is "four hundred one million, eight hundred seventy thousand, five hundred five".