423955590 has 32 divisors (see below), whose sum is σ = 1018245600. Its totient is φ = 112971264.

The previous prime is 423955561. The next prime is 423955601. The reversal of 423955590 is 95559324.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43486 + ... + 52334.

It is an arithmetic number, because the mean of its divisors is an integer number (31820175).

Almost surely, 2^423955590 is an apocalyptic number.

423955590 is an abundant number, since it is smaller than the sum of its proper divisors (594290010).

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

423955590 is a wasteful number, since it uses less digits than its factorization.

423955590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10456.

The product of its (nonzero) digits is 243000, while the sum is 42.

The square root of 423955590 is about 20590.1818836066. The cubic root of 423955590 is about 751.2309208953.

The spelling of 423955590 in words is "four hundred twenty-three million, nine hundred fifty-five thousand, five hundred ninety".