49513949 has 4 divisors (see below), whose sum is σ = 49635420. Its totient is φ = 49392480.

The previous prime is 49513907. The next prime is 49513951. The reversal of 49513949 is 94931594.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94931594 = 2 ⋅47465797.

It can be written as a sum of positive squares in 2 ways, for example, as 41190724 + 8323225 = 6418^2 + 2885^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49513949 is a prime.

It is a super-2 number, since 2×49513949² = 4903262291149202, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49513969) 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, 60122 + ... + 60939.

It is an arithmetic number, because the mean of its divisors is an integer number (12408855).

Almost surely, 2^49513949 is an apocalyptic number.

It is an amenable number.

49513949 is a deficient number, since it is larger than the sum of its proper divisors (121471).

49513949 is a wasteful number, since it uses less digits than its factorization.

49513949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121470.

The product of its digits is 174960, while the sum is 44.

The square root of 49513949 is about 7036.6148821717. The cubic root of 49513949 is about 367.2055092142.

The spelling of 49513949 in words is "forty-nine million, five hundred thirteen thousand, nine hundred forty-nine".