394743877 has 4 divisors (see below), whose sum is σ = 430629696. Its totient is φ = 358858060.

The previous prime is 394743857. The next prime is 394743887. The reversal of 394743877 is 778347493.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 394743877 - 2¹¹ = 394741829 is a prime.

It is a super-2 number, since 2×394743877² = 311645456857982258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394743847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17942893 + ... + 17942914.

It is an arithmetic number, because the mean of its divisors is an integer number (107657424).

Almost surely, 2^394743877 is an apocalyptic number.

It is an amenable number.

394743877 is a deficient number, since it is larger than the sum of its proper divisors (35885819).

394743877 is a wasteful number, since it uses less digits than its factorization.

394743877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35885818.

The product of its digits is 3556224, while the sum is 52.

The square root of 394743877 is about 19868.1623961553. The cubic root of 394743877 is about 733.5647726573.

The spelling of 394743877 in words is "three hundred ninety-four million, seven hundred forty-three thousand, eight hundred seventy-seven".