394444507 has 8 divisors (see below), whose sum is σ = 397748736. Its totient is φ = 391154472.

The previous prime is 394444499. The next prime is 394444517. The reversal of 394444507 is 705444493.

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

It is a cyclic number.

It is not a de Polignac number, because 394444507 - 2³ = 394444499 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 394444507.

It is not an unprimeable number, because it can be changed into a prime (394444517) 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, 56398 + ... + 63004.

It is an arithmetic number, because the mean of its divisors is an integer number (49718592).

Almost surely, 2^394444507 is an apocalyptic number.

394444507 is a deficient number, since it is larger than the sum of its proper divisors (3304229).

394444507 is a wasteful number, since it uses less digits than its factorization.

394444507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7097.

The product of its (nonzero) digits is 241920, while the sum is 40.

The square root of 394444507 is about 19860.6270545519. The cubic root of 394444507 is about 733.3792829105.

The spelling of 394444507 in words is "three hundred ninety-four million, four hundred forty-four thousand, five hundred seven".