49781905 has 8 divisors (see below), whose sum is σ = 59784192. Its totient is φ = 39794928.

The previous prime is 49781903. The next prime is 49781911. The reversal of 49781905 is 50918794.

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 49781905 - 2¹ = 49781903 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49781903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5322 + ... + 11308.

It is an arithmetic number, because the mean of its divisors is an integer number (7473024).

Almost surely, 2^49781905 is an apocalyptic number.

It is an amenable number.

49781905 is a deficient number, since it is larger than the sum of its proper divisors (10002287).

49781905 is a wasteful number, since it uses less digits than its factorization.

49781905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7655.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 49781905 is about 7055.6293128253. The cubic root of 49781905 is about 367.8667232602.

The spelling of 49781905 in words is "forty-nine million, seven hundred eighty-one thousand, nine hundred five".