944156309 has 4 divisors (see below), whose sum is σ = 948208716. Its totient is φ = 940103904.

The previous prime is 944156263. The next prime is 944156321. The reversal of 944156309 is 903651449.

944156309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 683979409 + 260176900 = 26153^2 + 16130^2 .

It is a cyclic number.

It is not a de Polignac number, because 944156309 - 2⁸ = 944156053 is a prime.

It is a super-2 number, since 2×944156309² = 1782862271649006962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (944156359) 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, 2025854 + ... + 2026319.

It is an arithmetic number, because the mean of its divisors is an integer number (237052179).

Almost surely, 2^944156309 is an apocalyptic number.

It is an amenable number.

944156309 is a deficient number, since it is larger than the sum of its proper divisors (4052407).

944156309 is a wasteful number, since it uses less digits than its factorization.

944156309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4052406.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 944156309 is about 30727.1265984960. The cubic root of 944156309 is about 981.0277670337.

The spelling of 944156309 in words is "nine hundred forty-four million, one hundred fifty-six thousand, three hundred nine".