49999000 has 32 divisors (see below), whose sum is σ = 117000000. Its totient is φ = 19999200.

The previous prime is 49998983. The next prime is 49999031. The reversal of 49999000 is 99994.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24000 + ... + 25999.

It is an arithmetic number, because the mean of its divisors is an integer number (3656250).

Almost surely, 2^49999000 is an apocalyptic number.

49999000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

49999000 is an abundant number, since it is smaller than the sum of its proper divisors (67001000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49999000 is a wasteful number, since it uses less digits than its factorization.

49999000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50020 (or 50006 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 40.

The square root of 49999000 is about 7070.9971008338. The cubic root of 49999000 is about 368.4006938267.

It can be divided in two parts, 499 and 99000, that added together give a palindrome (99499).

The spelling of 49999000 in words is "forty-nine million, nine hundred ninety-nine thousand".