49936509 has 12 divisors (see below), whose sum is σ = 82434976. Its totient is φ = 28535112.

The previous prime is 49936499. The next prime is 49936511. The reversal of 49936509 is 90563994.

It is a happy number.

It is not a de Polignac number, because 49936509 - 2⁵ = 49936477 is a prime.

It is a super-2 number, since 2×49936509² = 4987309862214162, 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 (49936559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 396259 + ... + 396384.

Almost surely, 2^49936509 is an apocalyptic number.

It is an amenable number.

49936509 is a deficient number, since it is larger than the sum of its proper divisors (32498467).

49936509 is a wasteful number, since it uses less digits than its factorization.

49936509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792656 (or 792653 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 45.

The square root of 49936509 is about 7066.5768940839. The cubic root of 49936509 is about 368.2471485850.

The spelling of 49936509 in words is "forty-nine million, nine hundred thirty-six thousand, five hundred nine".