394800431 has 4 divisors (see below), whose sum is σ = 397006200. Its totient is φ = 392594664.

The previous prime is 394800421. The next prime is 394800437. The reversal of 394800431 is 134008493.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 394800431 - 2¹⁰ = 394799407 is a prime.

It is a super-2 number, since 2×394800431² = 311734760635571522, 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 (394800437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1102616 + ... + 1102973.

It is an arithmetic number, because the mean of its divisors is an integer number (99251550).

Almost surely, 2^394800431 is an apocalyptic number.

394800431 is a deficient number, since it is larger than the sum of its proper divisors (2205769).

394800431 is a wasteful number, since it uses less digits than its factorization.

394800431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2205768.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 394800431 is about 19869.5855769566. The cubic root of 394800431 is about 733.5998030011.

The spelling of 394800431 in words is "three hundred ninety-four million, eight hundred thousand, four hundred thirty-one".