838489290 has 32 divisors (see below), whose sum is σ = 2016259776. Its totient is φ = 223165440.

The previous prime is 838489241. The next prime is 838489291. The reversal of 838489290 is 92984838.

It is a happy number.

It is a super-3 number, since 3×838489290³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (838489291) 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, 11031 + ... + 42410.

It is an arithmetic number, because the mean of its divisors is an integer number (63008118).

Almost surely, 2^838489290 is an apocalyptic number.

838489290 is an abundant number, since it is smaller than the sum of its proper divisors (1177770486).

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

838489290 is a wasteful number, since it uses less digits than its factorization.

838489290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53974.

The product of its (nonzero) digits is 995328, while the sum is 51.

The square root of 838489290 is about 28956.6795403064. The cubic root of 838489290 is about 942.9728163538.

The spelling of 838489290 in words is "eight hundred thirty-eight million, four hundred eighty-nine thousand, two hundred ninety".