420944590 has 16 divisors (see below), whose sum is σ = 826582320. Its totient is φ = 153070720.

The previous prime is 420944569. The next prime is 420944609. The reversal of 420944590 is 95449024.

It is a happy number.

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, 1913275 + ... + 1913494.

It is an arithmetic number, because the mean of its divisors is an integer number (51661395).

Almost surely, 2^420944590 is an apocalyptic number.

420944590 is a deficient number, since it is larger than the sum of its proper divisors (405637730).

420944590 is a wasteful number, since it uses less digits than its factorization.

420944590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3826787.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 420944590 is about 20516.9342251712. The cubic root of 420944590 is about 749.4482401068.

The spelling of 420944590 in words is "four hundred twenty million, nine hundred forty-four thousand, five hundred ninety".