49642691 has 4 divisors (see below), whose sum is σ = 56734512. Its totient is φ = 42550872.

The previous prime is 49642679. The next prime is 49642709. The reversal of 49642691 is 19624694.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19624694 = 2 ⋅9812347.

It is not a de Polignac number, because 49642691 - 2¹⁸ = 49380547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49642631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3545900 + ... + 3545913.

It is an arithmetic number, because the mean of its divisors is an integer number (14183628).

Almost surely, 2^49642691 is an apocalyptic number.

49642691 is a deficient number, since it is larger than the sum of its proper divisors (7091821).

49642691 is an equidigital number, since it uses as much as digits as its factorization.

49642691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7091820.

The product of its digits is 93312, while the sum is 41.

The square root of 49642691 is about 7045.7569501083. The cubic root of 49642691 is about 367.5234927213.

The spelling of 49642691 in words is "forty-nine million, six hundred forty-two thousand, six hundred ninety-one".