440312413 has 4 divisors (see below), whose sum is σ = 440542368. Its totient is φ = 440082460.

The previous prime is 440312401. The next prime is 440312417. The reversal of 440312413 is 314213044.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-440312413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440312417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112081 + ... + 115942.

It is an arithmetic number, because the mean of its divisors is an integer number (110135592).

Almost surely, 2^440312413 is an apocalyptic number.

It is an amenable number.

440312413 is a deficient number, since it is larger than the sum of its proper divisors (229955).

440312413 is a wasteful number, since it uses less digits than its factorization.

440312413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229954.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 440312413 is about 20983.6224946981. The cubic root of 440312413 is about 760.7704634712.

Adding to 440312413 its reverse (314213044), we get a palindrome (754525457).

The spelling of 440312413 in words is "four hundred forty million, three hundred twelve thousand, four hundred thirteen".