49013865 has 12 divisors (see below), whose sum is σ = 84957444. Its totient is φ = 26140704.

The previous prime is 49013831. The next prime is 49013929. The reversal of 49013865 is 56831094.

It can be written as a sum of positive squares in 2 ways, for example, as 9437184 + 39576681 = 3072^2 + 6291^2 .

It is not a de Polignac number, because 49013865 - 2⁶ = 49013801 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 544554 + ... + 544643.

It is an arithmetic number, because the mean of its divisors is an integer number (7079787).

Almost surely, 2^49013865 is an apocalyptic number.

49013865 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

49013865 is a deficient number, since it is larger than the sum of its proper divisors (35943579).

49013865 is a wasteful number, since it uses less digits than its factorization.

49013865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089208 (or 1089205 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 49013865 is about 7000.9902870951. The cubic root of 49013865 is about 365.9650822193.

The spelling of 49013865 in words is "forty-nine million, thirteen thousand, eight hundred sixty-five".