394635380 has 24 divisors (see below), whose sum is σ = 864767232. Its totient is φ = 150990752.

The previous prime is 394635361. The next prime is 394635383. The reversal of 394635380 is 83536493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394635383) 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, 428492 + ... + 429411.

It is an arithmetic number, because the mean of its divisors is an integer number (36031968).

Almost surely, 2^394635380 is an apocalyptic number.

It is an amenable number.

394635380 is an abundant number, since it is smaller than the sum of its proper divisors (470131852).

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

394635380 is a wasteful number, since it uses less digits than its factorization.

394635380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857935 (or 857933 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 41.

The square root of 394635380 is about 19865.4317848870. The cubic root of 394635380 is about 733.4975587205.

The spelling of 394635380 in words is "three hundred ninety-four million, six hundred thirty-five thousand, three hundred eighty".