49139087 has 4 divisors (see below), whose sum is σ = 49153680. Its totient is φ = 49124496.

The previous prime is 49139059. The next prime is 49139119. The reversal of 49139087 is 78093194.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 78093194 = 2 ⋅39046597.

It is a cyclic number.

It is not a de Polignac number, because 49139087 - 2¹⁶ = 49073551 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 (49139047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 614 + ... + 9932.

It is an arithmetic number, because the mean of its divisors is an integer number (12288420).

Almost surely, 2^49139087 is an apocalyptic number.

49139087 is a deficient number, since it is larger than the sum of its proper divisors (14593).

49139087 is an equidigital number, since it uses as much as digits as its factorization.

49139087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14592.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 49139087 is about 7009.9277457047. The cubic root of 49139087 is about 366.2764764763.

The spelling of 49139087 in words is "forty-nine million, one hundred thirty-nine thousand, eighty-seven".