2139976522 has 4 divisors (see below), whose sum is σ = 3209964786. Its totient is φ = 1069988260.

The previous prime is 2139976477. The next prime is 2139976537. The reversal of 2139976522 is 2256799312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1793607201 + 346369321 = 42351^2 + 18611^2 .

It is a super-2 number, since 2×2139976522² = 9158999029422432968, which contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 534994129 + ... + 534994132.

Almost surely, 2^2139976522 is an apocalyptic number.

2139976522 is a deficient number, since it is larger than the sum of its proper divisors (1069988264).

2139976522 is a wasteful number, since it uses less digits than its factorization.

2139976522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069988263.

The product of its digits is 408240, while the sum is 46.

The square root of 2139976522 is about 46259.8802635718. The cubic root of 2139976522 is about 1288.6540298878.

The spelling of 2139976522 in words is "two billion, one hundred thirty-nine million, nine hundred seventy-six thousand, five hundred twenty-two".