50899999 has 4 divisors (see below), whose sum is σ = 51513336. Its totient is φ = 50286664.

The previous prime is 50899963. The next prime is 50900009. The reversal of 50899999 is 99999805.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50899999 is a prime.

It is a super-4 number, since 4×50899999⁴ (a number of 32 digits) contains 4444 as substring.

It is a Duffinian number.

50899999 is a modest number, since divided by 9999 gives 5089 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50899909) 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, 306544 + ... + 306709.

It is an arithmetic number, because the mean of its divisors is an integer number (12878334).

Almost surely, 2^50899999 is an apocalyptic number.

50899999 is a deficient number, since it is larger than the sum of its proper divisors (613337).

50899999 is an equidigital number, since it uses as much as digits as its factorization.

50899999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613336.

The product of its (nonzero) digits is 2361960, while the sum is 58.

The square root of 50899999 is about 7134.4235226120. The cubic root of 50899999 is about 370.6004348772.

The spelling of 50899999 in words is "fifty million, eight hundred ninety-nine thousand, nine hundred ninety-nine".