49381985 has 8 divisors (see below), whose sum is σ = 59601960. Its totient is φ = 39276544.

The previous prime is 49381979. The next prime is 49382029. The reversal of 49381985 is 58918394.

It can be written as a sum of positive squares in 4 ways, for example, as 12306064 + 37075921 = 3508^2 + 6089^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 49381985 - 2⁶ = 49381921 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27680 + ... + 29409.

It is an arithmetic number, because the mean of its divisors is an integer number (7450245).

Almost surely, 2^49381985 is an apocalyptic number.

It is an amenable number.

49381985 is a deficient number, since it is larger than the sum of its proper divisors (10219975).

49381985 is a wasteful number, since it uses less digits than its factorization.

49381985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57267.

The product of its digits is 311040, while the sum is 47.

The square root of 49381985 is about 7027.2316739951. The cubic root of 49381985 is about 366.8789950199.

The spelling of 49381985 in words is "forty-nine million, three hundred eighty-one thousand, nine hundred eighty-five".