49942987 has 4 divisors (see below), whose sum is σ = 50059296. Its totient is φ = 49826680.

The previous prime is 49942903. The next prime is 49942993. The reversal of 49942987 is 78924994.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78924994 = 2 ⋅39462497.

It is a cyclic number.

It is not a de Polignac number, because 49942987 - 2¹¹ = 49940939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49943987) 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, 57508 + ... + 58369.

It is an arithmetic number, because the mean of its divisors is an integer number (12514824).

Almost surely, 2^49942987 is an apocalyptic number.

49942987 is a deficient number, since it is larger than the sum of its proper divisors (116309).

49942987 is a wasteful number, since it uses less digits than its factorization.

49942987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116308.

The product of its digits is 1306368, while the sum is 52.

The square root of 49942987 is about 7067.0352340992. The cubic root of 49942987 is about 368.2630714834.

The spelling of 49942987 in words is "forty-nine million, nine hundred forty-two thousand, nine hundred eighty-seven".