89942890 has 16 divisors (see below), whose sum is σ = 162053640. Its totient is φ = 35942400.

The previous prime is 89942863. The next prime is 89942899. The reversal of 89942890 is 9824998.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 40564161 + 49378729 = 6369^2 + 7027^2 .

It is not an unprimeable number, because it can be changed into a prime (89942899) 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, 8266 + ... + 15754.

Almost surely, 2^89942890 is an apocalyptic number.

89942890 is a deficient number, since it is larger than the sum of its proper divisors (72110750).

89942890 is a wasteful number, since it uses less digits than its factorization.

89942890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8697.

The product of its (nonzero) digits is 373248, while the sum is 49.

The square root of 89942890 is about 9483.8225415705. The cubic root of 89942890 is about 448.0456645895.

The spelling of 89942890 in words is "eighty-nine million, nine hundred forty-two thousand, eight hundred ninety".