47867985 has 24 divisors (see below), whose sum is σ = 90514944. Its totient is φ = 23208480.

The previous prime is 47867977. The next prime is 47867993. The reversal of 47867985 is 58976874.

47867985 = T₆₆ + T₆₇ + ... + T₆₅₉.

It is an interprime number because it is at equal distance from previous prime (47867977) and next prime (47867993).

It is not a de Polignac number, because 47867985 - 2³ = 47867977 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47857 + ... + 48846.

It is an arithmetic number, because the mean of its divisors is an integer number (3771456).

Almost surely, 2^47867985 is an apocalyptic number.

47867985 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

47867985 is a deficient number, since it is larger than the sum of its proper divisors (42646959).

47867985 is a wasteful number, since it uses less digits than its factorization.

47867985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96725 (or 96722 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 54.

The square root of 47867985 is about 6918.6693084725. The cubic root of 47867985 is about 363.0906360202.

Subtracting 47867985 from its reverse (58976874), we obtain a square (11108889 = 3333²).

The spelling of 47867985 in words is "forty-seven million, eight hundred sixty-seven thousand, nine hundred eighty-five".