440023399 has 4 divisors (see below), whose sum is σ = 441578536. Its totient is φ = 438468264.

The previous prime is 440023391. The next prime is 440023411. The reversal of 440023399 is 993320044.

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 440023399 - 2³ = 440023391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440023391) 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, 777144 + ... + 777709.

It is an arithmetic number, because the mean of its divisors is an integer number (110394634).

Almost surely, 2^440023399 is an apocalyptic number.

440023399 is a deficient number, since it is larger than the sum of its proper divisors (1555137).

440023399 is a wasteful number, since it uses less digits than its factorization.

440023399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1555136.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 440023399 is about 20976.7347077661. The cubic root of 440023399 is about 760.6039745322.

The spelling of 440023399 in words is "four hundred forty million, twenty-three thousand, three hundred ninety-nine".