440428738 has 8 divisors (see below), whose sum is σ = 661308732. Its totient is φ = 219992496.

The previous prime is 440428727. The next prime is 440428753. The reversal of 440428738 is 837824044.

It can be written as a sum of positive squares in 2 ways, for example, as 352200289 + 88228449 = 18767^2 + 9393^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 440428738.

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, 108445 + ... + 112432.

Almost surely, 2^440428738 is an apocalyptic number.

440428738 is a deficient number, since it is larger than the sum of its proper divisors (220879994).

440428738 is a wasteful number, since it uses less digits than its factorization.

440428738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221876.

The product of its (nonzero) digits is 172032, while the sum is 40.

The square root of 440428738 is about 20986.3941161887. The cubic root of 440428738 is about 760.8374529007.

The spelling of 440428738 in words is "four hundred forty million, four hundred twenty-eight thousand, seven hundred thirty-eight".