394445049 has 8 divisors (see below), whose sum is σ = 540141120. Its totient is φ = 255856176.

The previous prime is 394445047. The next prime is 394445053. The reversal of 394445049 is 940544493.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 394445049 - 2¹ = 394445047 is a prime.

It is a super-2 number, since 2×394445049² = 311173793361224802, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 394445049.

It is not an unprimeable number, because it can be changed into a prime (394445047) 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, 1776669 + ... + 1776890.

It is an arithmetic number, because the mean of its divisors is an integer number (67517640).

Almost surely, 2^394445049 is an apocalyptic number.

It is an amenable number.

394445049 is a deficient number, since it is larger than the sum of its proper divisors (145696071).

394445049 is a wasteful number, since it uses less digits than its factorization.

394445049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3553599.

The product of its (nonzero) digits is 311040, while the sum is 42.

The square root of 394445049 is about 19860.6406996350. The cubic root of 394445049 is about 733.3796188187.

The spelling of 394445049 in words is "three hundred ninety-four million, four hundred forty-five thousand, forty-nine".