49966019 has 4 divisors (see below), whose sum is σ = 49983744. Its totient is φ = 49948296.

The previous prime is 49965997. The next prime is 49966031. The reversal of 49966019 is 91066994.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 49966019 - 2²⁰ = 48917443 is a prime.

It is a super-2 number, since 2×49966019² = 4993206109416722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49966069) 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, 3587 + ... + 10620.

It is an arithmetic number, because the mean of its divisors is an integer number (12495936).

Almost surely, 2^49966019 is an apocalyptic number.

49966019 is a deficient number, since it is larger than the sum of its proper divisors (17725).

49966019 is a wasteful number, since it uses less digits than its factorization.

49966019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17724.

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 49966019 is about 7068.6645839225. The cubic root of 49966019 is about 368.3196729007.

The spelling of 49966019 in words is "forty-nine million, nine hundred sixty-six thousand, nineteen".