49239783 has 18 divisors (see below), whose sum is σ = 71947512. Its totient is φ = 32449680.

The previous prime is 49239781. The next prime is 49239793. The reversal of 49239783 is 38793294.

It is a happy number.

It is not a de Polignac number, because 49239783 - 2¹ = 49239781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49239781) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 271953 + ... + 272133.

It is an arithmetic number, because the mean of its divisors is an integer number (3997084).

Almost surely, 2^49239783 is an apocalyptic number.

49239783 is a deficient number, since it is larger than the sum of its proper divisors (22707729).

49239783 is a wasteful number, since it uses less digits than its factorization.

49239783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535 (or 351 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 49239783 is about 7017.1064549428. The cubic root of 49239783 is about 366.5264974790.

It can be divided in two parts, 4923 and 9783, that added together give a triangular number (14706 = T₁₇₁).

The spelling of 49239783 in words is "forty-nine million, two hundred thirty-nine thousand, seven hundred eighty-three".