4397923831 has 4 divisors (see below), whose sum is σ = 5026198672. Its totient is φ = 3769648992.

The previous prime is 4397923811. The next prime is 4397923867. The reversal of 4397923831 is 1383297934.

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 4397923831 - 2⁹ = 4397923319 is a prime.

It is a super-2 number, since 2×4397923831² = 38683468046555433122, 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 (4397923811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314137410 + ... + 314137423.

It is an arithmetic number, because the mean of its divisors is an integer number (1256549668).

Almost surely, 2^4397923831 is an apocalyptic number.

4397923831 is a deficient number, since it is larger than the sum of its proper divisors (628274841).

4397923831 is an equidigital number, since it uses as much as digits as its factorization.

4397923831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628274840.

The product of its digits is 979776, while the sum is 49.

The square root of 4397923831 is about 66316.8442478983. The cubic root of 4397923831 is about 1638.3847658916.

The spelling of 4397923831 in words is "four billion, three hundred ninety-seven million, nine hundred twenty-three thousand, eight hundred thirty-one".