49998389 has 16 divisors (see below), whose sum is σ = 60395520. Its totient is φ = 40463280.

The previous prime is 49998371. The next prime is 49998397. The reversal of 49998389 is 98389994.

It is a cyclic number.

It is not a de Polignac number, because 49998389 - 2¹⁶ = 49932853 is a prime.

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 (49995389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10754 + ... + 14684.

It is an arithmetic number, because the mean of its divisors is an integer number (3774720).

Almost surely, 2^49998389 is an apocalyptic number.

It is an amenable number.

49998389 is a deficient number, since it is larger than the sum of its proper divisors (10397131).

49998389 is a wasteful number, since it uses less digits than its factorization.

49998389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4040.

The product of its digits is 5038848, while the sum is 59.

The square root of 49998389 is about 7070.9538960454. The cubic root of 49998389 is about 368.3991931717.

The spelling of 49998389 in words is "forty-nine million, nine hundred ninety-eight thousand, three hundred eighty-nine".