4249139291 has 4 divisors (see below), whose sum is σ = 4250340792. Its totient is φ = 4247937792.

The previous prime is 4249139269. The next prime is 4249139317. The reversal of 4249139291 is 1929319424.

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

It is a cyclic number.

It is not a de Polignac number, because 4249139291 - 2⁶ = 4249139227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4249139221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 595430 + ... + 602523.

It is an arithmetic number, because the mean of its divisors is an integer number (1062585198).

Almost surely, 2^4249139291 is an apocalyptic number.

4249139291 is a deficient number, since it is larger than the sum of its proper divisors (1201501).

4249139291 is a wasteful number, since it uses less digits than its factorization.

4249139291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201500.

The product of its digits is 139968, while the sum is 44.

The square root of 4249139291 is about 65185.4223810815. The cubic root of 4249139291 is about 1619.6965456863.

The spelling of 4249139291 in words is "four billion, two hundred forty-nine million, one hundred thirty-nine thousand, two hundred ninety-one".