394421075 has 6 divisors (see below), whose sum is σ = 489082164. Its totient is φ = 315536840.

The previous prime is 394421051. The next prime is 394421081. The reversal of 394421075 is 570124493.

It is not a de Polignac number, because 394421075 - 2²⁴ = 377643859 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7888397 + ... + 7888446.

It is an arithmetic number, because the mean of its divisors is an integer number (81513694).

Almost surely, 2^394421075 is an apocalyptic number.

394421075 is a deficient number, since it is larger than the sum of its proper divisors (94661089).

394421075 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 11 representation: 394421075 = (192705434)₁₁.

394421075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15776853 (or 15776848 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 394421075 is about 19860.0371349099. The cubic root of 394421075 is about 733.3647604759.

The spelling of 394421075 in words is "three hundred ninety-four million, four hundred twenty-one thousand, seventy-five".