49409517 has 4 divisors (see below), whose sum is σ = 65879360. Its totient is φ = 32939676.

The previous prime is 49409489. The next prime is 49409527. The reversal of 49409517 is 71590494.

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 not a de Polignac number, because 49409517 - 2⁶ = 49409453 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 (49409527) 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, 8234917 + ... + 8234922.

It is an arithmetic number, because the mean of its divisors is an integer number (16469840).

Almost surely, 2^49409517 is an apocalyptic number.

It is an amenable number.

49409517 is a deficient number, since it is larger than the sum of its proper divisors (16469843).

49409517 is a wasteful number, since it uses less digits than its factorization.

49409517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16469842.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 49409517 is about 7029.1903516692. The cubic root of 49409517 is about 366.9471645213.

The spelling of 49409517 in words is "forty-nine million, four hundred nine thousand, five hundred seventeen".