439740091 has 16 divisors (see below), whose sum is σ = 509160960. Its totient is φ = 371992320.

The previous prime is 439740083. The next prime is 439740097. The reversal of 439740091 is 190047934.

It is not a de Polignac number, because 439740091 - 2³ = 439740083 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 439740091.

It is not an unprimeable number, because it can be changed into a prime (439740097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 332730 + ... + 334048.

It is an arithmetic number, because the mean of its divisors is an integer number (31822560).

Almost surely, 2^439740091 is an apocalyptic number.

439740091 is a deficient number, since it is larger than the sum of its proper divisors (69420869).

439740091 is a wasteful number, since it uses less digits than its factorization.

439740091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1914.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 439740091 is about 20969.9807105300. The cubic root of 439740091 is about 760.4407018105.

The spelling of 439740091 in words is "four hundred thirty-nine million, seven hundred forty thousand, ninety-one".