49387999 has 2 divisors, whose sum is σ = 49388000. Its totient is φ = 49387998.

The previous prime is 49387967. The next prime is 49388021. The reversal of 49387999 is 99978394.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49387999 - 2⁵ = 49387967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49387399) 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 as a sum of consecutive naturals, namely, 24693999 + 24694000.

It is an arithmetic number, because the mean of its divisors is an integer number (24694000).

Almost surely, 2^49387999 is an apocalyptic number.

49387999 is a deficient number, since it is larger than the sum of its proper divisors (1).

49387999 is an equidigital number, since it uses as much as digits as its factorization.

49387999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4408992, while the sum is 58.

The square root of 49387999 is about 7027.6595677366. The cubic root of 49387999 is about 366.8938879052.

The spelling of 49387999 in words is "forty-nine million, three hundred eighty-seven thousand, nine hundred ninety-nine".