440970913 has 4 divisors (see below), whose sum is σ = 445252288. Its totient is φ = 436689540.

The previous prime is 440970889. The next prime is 440970919. The reversal of 440970913 is 319079044.

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-440970913 is a prime.

It is a super-2 number, since 2×440970913² = 388910692224107138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440970919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2140533 + ... + 2140738.

It is an arithmetic number, because the mean of its divisors is an integer number (111313072).

Almost surely, 2^440970913 is an apocalyptic number.

It is an amenable number.

440970913 is a deficient number, since it is larger than the sum of its proper divisors (4281375).

440970913 is a wasteful number, since it uses less digits than its factorization.

440970913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4281374.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 440970913 is about 20999.3074409610. The cubic root of 440970913 is about 761.1495260077.

The spelling of 440970913 in words is "four hundred forty million, nine hundred seventy thousand, nine hundred thirteen".