2309943964 has 24 divisors (see below), whose sum is σ = 4114233648. Its totient is φ = 1134576000.

The previous prime is 2309943949. The next prime is 2309943967. The reversal of 2309943964 is 4693499032.

It is a super-2 number, since 2×2309943964² = 10671682233640066592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2309943967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57534 + ... + 89050.

It is an arithmetic number, because the mean of its divisors is an integer number (171426402).

Almost surely, 2^2309943964 is an apocalyptic number.

It is an amenable number.

2309943964 is a deficient number, since it is larger than the sum of its proper divisors (1804289684).

2309943964 is a wasteful number, since it uses less digits than its factorization.

2309943964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31845 (or 31843 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 49.

The square root of 2309943964 is about 48061.8764094786. The cubic root of 2309943964 is about 1321.9057191780.

The spelling of 2309943964 in words is "two billion, three hundred nine million, nine hundred forty-three thousand, nine hundred sixty-four".