326401994 has 4 divisors (see below), whose sum is σ = 489602994. Its totient is φ = 163200996.

The previous prime is 326401979. The next prime is 326401997. The reversal of 326401994 is 499104623.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 167314225 + 159087769 = 12935^2 + 12613^2 .

It is not an unprimeable number, because it can be changed into a prime (326401997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81600497 + ... + 81600500.

Almost surely, 2^326401994 is an apocalyptic number.

326401994 is a deficient number, since it is larger than the sum of its proper divisors (163201000).

326401994 is a wasteful number, since it uses less digits than its factorization.

326401994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163200999.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 326401994 is about 18066.5988498112. The cubic root of 326401994 is about 688.5216503602.

The spelling of 326401994 in words is "three hundred twenty-six million, four hundred one thousand, nine hundred ninety-four".