49240209 has 8 divisors (see below), whose sum is σ = 65722720. Its totient is φ = 32792256.

The previous prime is 49240201. The next prime is 49240253. The reversal of 49240209 is 90204294.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 49240209 - 2³ = 49240201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49240201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5107 + ... + 11160.

It is an arithmetic number, because the mean of its divisors is an integer number (8215340).

Almost surely, 2^49240209 is an apocalyptic number.

It is an amenable number.

49240209 is a deficient number, since it is larger than the sum of its proper divisors (16482511).

49240209 is a wasteful number, since it uses less digits than its factorization.

49240209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17279.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 49240209 is about 7017.1368092691. The cubic root of 49240209 is about 366.5275544823.

The spelling of 49240209 in words is "forty-nine million, two hundred forty thousand, two hundred nine".