2139433923 has 8 divisors (see below), whose sum is σ = 3111903936. Its totient is φ = 1296626600.

The previous prime is 2139433921. The next prime is 2139433931. The reversal of 2139433923 is 3293349312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2139433923 - 2¹ = 2139433921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2139433921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32415633 + ... + 32415698.

It is an arithmetic number, because the mean of its divisors is an integer number (388987992).

Almost surely, 2^2139433923 is an apocalyptic number.

2139433923 is a deficient number, since it is larger than the sum of its proper divisors (972470013).

2139433923 is a wasteful number, since it uses less digits than its factorization.

2139433923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64831345.

The product of its digits is 104976, while the sum is 39.

The square root of 2139433923 is about 46254.0152094929. The cubic root of 2139433923 is about 1288.5451063418.

The spelling of 2139433923 in words is "two billion, one hundred thirty-nine million, four hundred thirty-three thousand, nine hundred twenty-three".