49000409 has 4 divisors (see below), whose sum is σ = 51882804. Its totient is φ = 46118016.

The previous prime is 49000403. The next prime is 49000421. The reversal of 49000409 is 90400094.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90400094 = 2 ⋅45200047.

It can be written as a sum of positive squares in 2 ways, for example, as 32775625 + 16224784 = 5725^2 + 4028^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49000409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49000403) 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, 1441172 + ... + 1441205.

It is an arithmetic number, because the mean of its divisors is an integer number (12970701).

Almost surely, 2^49000409 is an apocalyptic number.

It is an amenable number.

49000409 is a deficient number, since it is larger than the sum of its proper divisors (2882395).

49000409 is a wasteful number, since it uses less digits than its factorization.

49000409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2882394.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 49000409 is about 7000.0292142248. The cubic root of 49000409 is about 365.9315891328.

The spelling of 49000409 in words is "forty-nine million, four hundred nine", and thus it is an aban number.