404422140 has 24 divisors (see below), whose sum is σ = 1132382160. Its totient is φ = 107845888.

The previous prime is 404422127. The next prime is 404422153. The reversal of 404422140 is 41224404.

It is an interprime number because it is at equal distance from previous prime (404422127) and next prime (404422153).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3370125 + ... + 3370244.

It is an arithmetic number, because the mean of its divisors is an integer number (47182590).

Almost surely, 2^404422140 is an apocalyptic number.

It is an amenable number.

404422140 is an abundant number, since it is smaller than the sum of its proper divisors (727960020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

404422140 is a wasteful number, since it uses less digits than its factorization.

404422140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6740381 (or 6740379 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 404422140 is about 20110.2496255019. The cubic root of 404422140 is about 739.5115720167.

Adding to 404422140 its reverse (41224404), we get a palindrome (445646544).

The spelling of 404422140 in words is "four hundred four million, four hundred twenty-two thousand, one hundred forty".