49490398787 has 16 divisors (see below), whose sum is σ = 53352910848. Its totient is φ = 45773022240.

The previous prime is 49490398753. The next prime is 49490398799. The reversal of 49490398787 is 78789309494.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49490398787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49490398687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 836258 + ... + 893480.

It is an arithmetic number, because the mean of its divisors is an integer number (3334556928).

Almost surely, 2^49490398787 is an apocalyptic number.

49490398787 is a deficient number, since it is larger than the sum of its proper divisors (3862512061).

49490398787 is a wasteful number, since it uses less digits than its factorization.

49490398787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58490.

The product of its (nonzero) digits is 109734912, while the sum is 68.

The spelling of 49490398787 in words is "forty-nine billion, four hundred ninety million, three hundred ninety-eight thousand, seven hundred eighty-seven".