4139721458 has 4 divisors (see below), whose sum is σ = 6209582190. Its totient is φ = 2069860728.

The previous prime is 4139721433. The next prime is 4139721473. The reversal of 4139721458 is 8541279314.

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., 2902300129 + 1237421329 = 53873^2 + 35177^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1034930363 + ... + 1034930366.

Almost surely, 2^4139721458 is an apocalyptic number.

4139721458 is a deficient number, since it is larger than the sum of its proper divisors (2069860732).

4139721458 is a wasteful number, since it uses less digits than its factorization.

4139721458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2069860731.

The product of its digits is 241920, while the sum is 44.

The square root of 4139721458 is about 64340.6672175538. The cubic root of 4139721458 is about 1605.6727617662.

The spelling of 4139721458 in words is "four billion, one hundred thirty-nine million, seven hundred twenty-one thousand, four hundred fifty-eight".