49491409 has 16 divisors (see below), whose sum is σ = 58164480. Its totient is φ = 41625360.

The previous prime is 49491391. The next prime is 49491413. The reversal of 49491409 is 90419494.

It is a cyclic number.

It is not a de Polignac number, because 49491409 - 2²³ = 41102801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49491439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6234 + ... + 11740.

It is an arithmetic number, because the mean of its divisors is an integer number (3635280).

Almost surely, 2^49491409 is an apocalyptic number.

It is an amenable number.

49491409 is a deficient number, since it is larger than the sum of its proper divisors (8673071).

49491409 is a wasteful number, since it uses less digits than its factorization.

49491409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5580.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 49491409 is about 7035.0130774576. The cubic root of 49491409 is about 367.1497803499.

The spelling of 49491409 in words is "forty-nine million, four hundred ninety-one thousand, four hundred nine".