2139400076 has 54 divisors (see below), whose sum is σ = 4322364228. Its totient is φ = 918762480.

The previous prime is 2139400073. The next prime is 2139400091. The reversal of 2139400076 is 6700049312.

It is not an unprimeable number, because it can be changed into a prime (2139400073) 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 17 ways as a sum of consecutive naturals, for example, 5829245 + ... + 5829611.

It is an arithmetic number, because the mean of its divisors is an integer number (80043782).

Almost surely, 2^2139400076 is an apocalyptic number.

It is an amenable number.

2139400076 is an abundant number, since it is smaller than the sum of its proper divisors (2182964152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2139400076 is a wasteful number, since it uses less digits than its factorization.

2139400076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787 (or 399 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 2139400076 is about 46253.6493262964. The cubic root of 2139400076 is about 1288.5383111462.

Adding to 2139400076 its reverse (6700049312), we get a palindrome (8839449388).

The spelling of 2139400076 in words is "two billion, one hundred thirty-nine million, four hundred thousand, seventy-six".