439728705 has 72 divisors (see below), whose sum is σ = 838626048. Its totient is φ = 213003648.

The previous prime is 439728703. The next prime is 439728739. The reversal of 439728705 is 507827934.

It is not a de Polignac number, because 439728705 - 2¹ = 439728703 is a prime.

It is a super-2 number, since 2×439728705² = 386722668001954050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (439728703) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 509104 + ... + 509966.

It is an arithmetic number, because the mean of its divisors is an integer number (11647584).

Almost surely, 2^439728705 is an apocalyptic number.

439728705 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

439728705 is a deficient number, since it is larger than the sum of its proper divisors (398897343).

439728705 is a wasteful number, since it uses less digits than its factorization.

439728705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967 (or 951 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The square root of 439728705 is about 20969.7092254518. The cubic root of 439728705 is about 760.4341384997.

The spelling of 439728705 in words is "four hundred thirty-nine million, seven hundred twenty-eight thousand, seven hundred five".