2309749869 has 16 divisors (see below), whose sum is σ = 3539070080. Its totient is φ = 1312562880.

The previous prime is 2309749847. The next prime is 2309749879. The reversal of 2309749869 is 9689479032.

It is not a de Polignac number, because 2309749869 - 2⁸ = 2309749613 is a prime.

It is a super-2 number, since 2×2309749869² = 10669888914691034322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2309749879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300034 + ... + 307635.

It is an arithmetic number, because the mean of its divisors is an integer number (221191880).

Almost surely, 2^2309749869 is an apocalyptic number.

It is an amenable number.

2309749869 is a deficient number, since it is larger than the sum of its proper divisors (1229320211).

2309749869 is a wasteful number, since it uses less digits than its factorization.

2309749869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607860.

The product of its (nonzero) digits is 5878656, while the sum is 57.

The square root of 2309749869 is about 48059.8571471035. The cubic root of 2309749869 is about 1321.8686933913.

The spelling of 2309749869 in words is "two billion, three hundred nine million, seven hundred forty-nine thousand, eight hundred sixty-nine".