49999749 has 4 divisors (see below), whose sum is σ = 66666336. Its totient is φ = 33333164.

The previous prime is 49999739. The next prime is 49999751. The reversal of 49999749 is 94799994.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 49999749 - 2²⁰ = 48951173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 49999692 and 49999701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49999739) 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 3 ways as a sum of consecutive naturals, for example, 8333289 + ... + 8333294.

It is an arithmetic number, because the mean of its divisors is an integer number (16666584).

Almost surely, 2^49999749 is an apocalyptic number.

It is an amenable number.

49999749 is a deficient number, since it is larger than the sum of its proper divisors (16666587).

49999749 is a wasteful number, since it uses less digits than its factorization.

49999749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16666586.

The product of its digits is 6613488, while the sum is 60.

The square root of 49999749 is about 7071.0500634630. The cubic root of 49999749 is about 368.4025334017.

The spelling of 49999749 in words is "forty-nine million, nine hundred ninety-nine thousand, seven hundred forty-nine".