49389999 has 4 divisors (see below), whose sum is σ = 65853336. Its totient is φ = 32926664.

The previous prime is 49389983. The next prime is 49390001. The reversal of 49389999 is 99998394.

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 49389999 - 2⁴ = 49389983 is a prime.

49389999 is a modest number, since divided by 9999 gives 4938 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49389959) 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, 8231664 + ... + 8231669.

It is an arithmetic number, because the mean of its divisors is an integer number (16463334).

Almost surely, 2^49389999 is an apocalyptic number.

49389999 is a deficient number, since it is larger than the sum of its proper divisors (16463337).

49389999 is a wasteful number, since it uses less digits than its factorization.

49389999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16463336.

The product of its digits is 5668704, while the sum is 60.

The square root of 49389999 is about 7027.8018611796. The cubic root of 49389999 is about 366.8988403760.

The spelling of 49389999 in words is "forty-nine million, three hundred eighty-nine thousand, nine hundred ninety-nine".