89942140 has 24 divisors (see below), whose sum is σ = 191700432. Its totient is φ = 35439360.

The previous prime is 89942131. The next prime is 89942141. The reversal of 89942140 is 4124998.

It is a happy number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 89942140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89942141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32221 + ... + 34900.

It is an arithmetic number, because the mean of its divisors is an integer number (7987518).

Almost surely, 2^89942140 is an apocalyptic number.

It is an amenable number.

89942140 is an abundant number, since it is smaller than the sum of its proper divisors (101758292).

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

89942140 is a wasteful number, since it uses less digits than its factorization.

89942140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67197 (or 67195 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 89942140 is about 9483.7830004698. The cubic root of 89942140 is about 448.0444192245.

The spelling of 89942140 in words is "eighty-nine million, nine hundred forty-two thousand, one hundred forty".