2139470450 has 24 divisors (see below), whose sum is σ = 4285525188. Its totient is φ = 789958080.

The previous prime is 2139470429. The next prime is 2139470453. The reversal of 2139470450 is 540749312.

It can be written as a sum of positive squares in 6 ways, for example, as 997233241 + 1142237209 = 31579^2 + 33797^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2139470450.

It is not an unprimeable number, because it can be changed into a prime (2139470453) 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 11 ways as a sum of consecutive naturals, for example, 1645097 + ... + 1646396.

Almost surely, 2^2139470450 is an apocalyptic number.

2139470450 is an abundant number, since it is smaller than the sum of its proper divisors (2146054738).

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

2139470450 is a wasteful number, since it uses less digits than its factorization.

2139470450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3291518 (or 3291513 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 2139470450 is about 46254.4100600148. The cubic root of 2139470450 is about 1288.5524394996.

The spelling of 2139470450 in words is "two billion, one hundred thirty-nine million, four hundred seventy thousand, four hundred fifty".