440213155 has 8 divisors (see below), whose sum is σ = 530584272. Its totient is φ = 350618208.

The previous prime is 440213117. The next prime is 440213167. The reversal of 440213155 is 551312044.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 440213155 - 2²⁵ = 406658723 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192792 + ... + 195061.

It is an arithmetic number, because the mean of its divisors is an integer number (66323034).

Almost surely, 2^440213155 is an apocalyptic number.

440213155 is a deficient number, since it is larger than the sum of its proper divisors (90371117).

440213155 is a wasteful number, since it uses less digits than its factorization.

440213155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388085.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 440213155 is about 20981.2572311575. The cubic root of 440213155 is about 760.7132932837.

Adding to 440213155 its reverse (551312044), we get a palindrome (991525199).

The spelling of 440213155 in words is "four hundred forty million, two hundred thirteen thousand, one hundred fifty-five".