380821994 has 16 divisors (see below), whose sum is σ = 681222528. Its totient is φ = 156113232.

The previous prime is 380821993. The next prime is 380822023. The reversal of 380821994 is 499128083.

It is a happy number.

It is a super-2 number, since 2×380821994² = 290050782228272072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (380821993) 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, 591017 + ... + 591660.

It is an arithmetic number, because the mean of its divisors is an integer number (42576408).

Almost surely, 2^380821994 is an apocalyptic number.

380821994 is a deficient number, since it is larger than the sum of its proper divisors (300400534).

380821994 is a wasteful number, since it uses less digits than its factorization.

380821994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182709.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 380821994 is about 19514.6610014112. The cubic root of 380821994 is about 724.8375341069.

The spelling of 380821994 in words is "three hundred eighty million, eight hundred twenty-one thousand, nine hundred ninety-four".