394127747 has 24 divisors (see below), whose sum is σ = 447425664. Its totient is φ = 345083904.

The previous prime is 394127731. The next prime is 394127807. The reversal of 394127747 is 747721493.

It is not a de Polignac number, because 394127747 - 2⁴ = 394127731 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 394127698 and 394127707.

It is not an unprimeable number, because it can be changed into a prime (394127717) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1533443 + ... + 1533699.

It is an arithmetic number, because the mean of its divisors is an integer number (18642736).

Almost surely, 2^394127747 is an apocalyptic number.

394127747 is a deficient number, since it is larger than the sum of its proper divisors (53297917).

394127747 is a wasteful number, since it uses less digits than its factorization.

394127747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539 (or 516 counting only the distinct ones).

The product of its digits is 296352, while the sum is 44.

The square root of 394127747 is about 19852.6508809277. The cubic root of 394127747 is about 733.1829160961.

The spelling of 394127747 in words is "three hundred ninety-four million, one hundred twenty-seven thousand, seven hundred forty-seven".