49912909 has 4 divisors (see below), whose sum is σ = 50854716. Its totient is φ = 48971104.

The previous prime is 49912861. The next prime is 49912927. The reversal of 49912909 is 90921994.

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

It can be written as a sum of positive squares in 2 ways, for example, as 38502025 + 11410884 = 6205^2 + 3378^2 .

It is a cyclic number.

It is not a de Polignac number, because 49912909 - 2¹³ = 49904717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49912409) 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, 470824 + ... + 470929.

It is an arithmetic number, because the mean of its divisors is an integer number (12713679).

Almost surely, 2^49912909 is an apocalyptic number.

It is an amenable number.

49912909 is a deficient number, since it is larger than the sum of its proper divisors (941807).

49912909 is an equidigital number, since it uses as much as digits as its factorization.

49912909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941806.

The product of its (nonzero) digits is 52488, while the sum is 43.

The square root of 49912909 is about 7064.9068642127. The cubic root of 49912909 is about 368.1891282287.

The spelling of 49912909 in words is "forty-nine million, nine hundred twelve thousand, nine hundred nine".