48999987 has 12 divisors (see below), whose sum is σ = 71674720. Its totient is φ = 32252688.

The previous prime is 48999983. The next prime is 48999989. The reversal of 48999987 is 78999984.

It is not a de Polignac number, because 48999987 - 2² = 48999983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (48999983) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33748 + ... + 35169.

Almost surely, 2^48999987 is an apocalyptic number.

48999987 is a deficient number, since it is larger than the sum of its proper divisors (22674733).

48999987 is a wasteful number, since it uses less digits than its factorization.

48999987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69002 (or 68999 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 63.

The square root of 48999987 is about 6999.9990714285. Note that the first 3 decimals coincide. The cubic root of 48999987 is about 365.9305386411.

Adding to 48999987 its sum of digits (63), we get a triangular number (49000050 = T₉₈₉₉).

The spelling of 48999987 in words is "forty-eight million, nine hundred ninety-nine thousand, nine hundred eighty-seven".