440021402 has 8 divisors (see below), whose sum is σ = 665070912. Its totient is φ = 218331100.

The previous prime is 440021381. The next prime is 440021411. The reversal of 440021402 is 204120044.

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

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, 839474 + ... + 839997.

It is an arithmetic number, because the mean of its divisors is an integer number (83133864).

Almost surely, 2^440021402 is an apocalyptic number.

440021402 is a deficient number, since it is larger than the sum of its proper divisors (225049510).

440021402 is a wasteful number, since it uses less digits than its factorization.

440021402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1679604.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 440021402 is about 20976.6871073580. The cubic root of 440021402 is about 760.6028238900.

Adding to 440021402 its reverse (204120044), we get a palindrome (644141446).

The spelling of 440021402 in words is "four hundred forty million, twenty-one thousand, four hundred two".