49281439 has 6 divisors (see below), whose sum is σ = 49553376. Its totient is φ = 49010940.

The previous prime is 49281431. The next prime is 49281443. The reversal of 49281439 is 93418294.

It is not a de Polignac number, because 49281439 - 2³ = 49281431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49281431) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 49234 + ... + 50224.

It is an arithmetic number, because the mean of its divisors is an integer number (8258896).

Almost surely, 2^49281439 is an apocalyptic number.

49281439 is a deficient number, since it is larger than the sum of its proper divisors (271937).

49281439 is an frugal number, since it uses more digits than its factorization.

49281439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1437 (or 1214 counting only the distinct ones).

The product of its digits is 62208, while the sum is 40.

The square root of 49281439 is about 7020.0740024589. The cubic root of 49281439 is about 366.6298266936.

The spelling of 49281439 in words is "forty-nine million, two hundred eighty-one thousand, four hundred thirty-nine".