440139002 has 4 divisors (see below), whose sum is σ = 660208506. Its totient is φ = 220069500.

The previous prime is 440139001. The next prime is 440139041. The reversal of 440139002 is 200931044.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 416119201 + 24019801 = 20399^2 + 4901^2 .

It is not an unprimeable number, because it can be changed into a prime (440139001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110034749 + ... + 110034752.

Almost surely, 2^440139002 is an apocalyptic number.

440139002 is a deficient number, since it is larger than the sum of its proper divisors (220069504).

440139002 is a wasteful number, since it uses less digits than its factorization.

440139002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220069503.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 440139002 is about 20979.4900319336. The cubic root of 440139002 is about 760.6705773556.

The spelling of 440139002 in words is "four hundred forty million, one hundred thirty-nine thousand, two".