890509380 has 48 divisors (see below), whose sum is σ = 2579411520. Its totient is φ = 229280128.

The previous prime is 890509349. The next prime is 890509387. The reversal of 890509380 is 83905098.

It is not an unprimeable number, because it can be changed into a prime (890509387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 254154 + ... + 257633.

It is an arithmetic number, because the mean of its divisors is an integer number (53737740).

Almost surely, 2^890509380 is an apocalyptic number.

It is an amenable number.

890509380 is an abundant number, since it is smaller than the sum of its proper divisors (1688902140).

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

890509380 is a wasteful number, since it uses less digits than its factorization.

890509380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511828 (or 511826 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 890509380 is about 29841.4037873556. The cubic root of 890509380 is about 962.0836469870.

The spelling of 890509380 in words is "eight hundred ninety million, five hundred nine thousand, three hundred eighty".