981423588 has 24 divisors (see below), whose sum is σ = 2290504608. Its totient is φ = 327067456.

The previous prime is 981423563. The next prime is 981423589. The reversal of 981423588 is 885324189.

It is not an unprimeable number, because it can be changed into a prime (981423589) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 83695 + ... + 94697.

It is an arithmetic number, because the mean of its divisors is an integer number (95437692).

Almost surely, 2^981423588 is an apocalyptic number.

It is an amenable number.

981423588 is an abundant number, since it is smaller than the sum of its proper divisors (1309081020).

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

981423588 is a wasteful number, since it uses less digits than its factorization.

981423588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18443 (or 18441 counting only the distinct ones).

The product of its digits is 552960, while the sum is 48.

The square root of 981423588 is about 31327.6808589465. The cubic root of 981423588 is about 993.7691194296.

The spelling of 981423588 in words is "nine hundred eighty-one million, four hundred twenty-three thousand, five hundred eighty-eight".