89850640 has 40 divisors (see below), whose sum is σ = 227896128. Its totient is φ = 32672640.

The previous prime is 89850623. The next prime is 89850641. The reversal of 89850640 is 4605898.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 89850593 and 89850602.

It is not an unprimeable number, because it can be changed into a prime (89850641) 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, 50172 + ... + 51931.

Almost surely, 2^89850640 is an apocalyptic number.

89850640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

89850640 is an abundant number, since it is smaller than the sum of its proper divisors (138045488).

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

89850640 is a wasteful number, since it uses less digits than its factorization.

89850640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102127 (or 102121 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 89850640 is about 9478.9577486135. The cubic root of 89850640 is about 447.8924327205.

The spelling of 89850640 in words is "eighty-nine million, eight hundred fifty thousand, six hundred forty".