49109780 has 18 divisors (see below), whose sum is σ = 103196394. Its totient is φ = 19631376.

The previous prime is 49109779. The next prime is 49109803. The reversal of 49109780 is 8790194.

It can be written as a sum of positive squares in only one way, i.e., 39287824 + 9821956 = 6268^2 + 3134^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30557 + ... + 32123.

It is an arithmetic number, because the mean of its divisors is an integer number (5733133).

Almost surely, 2^49109780 is an apocalyptic number.

It is an amenable number.

49109780 is an abundant number, since it is smaller than the sum of its proper divisors (54086614).

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

49109780 is an equidigital number, since it uses as much as digits as its factorization.

49109780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3143 (or 1574 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 49109780 is about 7007.8370414843. The cubic root of 49109780 is about 366.2036451174.

The spelling of 49109780 in words is "forty-nine million, one hundred nine thousand, seven hundred eighty".