4949756391 has 24 divisors (see below), whose sum is σ = 6850905600. Its totient is φ = 3178658160.

The previous prime is 4949756353. The next prime is 4949756401. The reversal of 4949756391 is 1936579494.

It is not a de Polignac number, because 4949756391 - 2⁶ = 4949756327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4949756321) 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 23 ways as a sum of consecutive naturals, for example, 639060 + ... + 646758.

It is an arithmetic number, because the mean of its divisors is an integer number (285454400).

Almost surely, 2^4949756391 is an apocalyptic number.

4949756391 is a deficient number, since it is larger than the sum of its proper divisors (1901149209).

4949756391 is a wasteful number, since it uses less digits than its factorization.

4949756391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7987 (or 7956 counting only the distinct ones).

The product of its digits is 7348320, while the sum is 57.

The square root of 4949756391 is about 70354.5051222734. The cubic root of 4949756391 is about 1704.2289626678.

The spelling of 4949756391 in words is "four billion, nine hundred forty-nine million, seven hundred fifty-six thousand, three hundred ninety-one".