4397431894 has 8 divisors (see below), whose sum is σ = 6749546760. Its totient is φ = 2147582976.

The previous prime is 4397431861. The next prime is 4397431901. The reversal of 4397431894 is 4981347934.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25566379 + ... + 25566550.

It is an arithmetic number, because the mean of its divisors is an integer number (843693345).

Almost surely, 2^4397431894 is an apocalyptic number.

4397431894 is a deficient number, since it is larger than the sum of its proper divisors (2352114866).

4397431894 is a wasteful number, since it uses less digits than its factorization.

4397431894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51132974.

The product of its digits is 2612736, while the sum is 52.

The square root of 4397431894 is about 66313.1351543569. The cubic root of 4397431894 is about 1638.3236755400.

The spelling of 4397431894 in words is "four billion, three hundred ninety-seven million, four hundred thirty-one thousand, eight hundred ninety-four".