47693986 has 4 divisors (see below), whose sum is σ = 71540982. Its totient is φ = 23846992.

The previous prime is 47693983. The next prime is 47694071. The reversal of 47693986 is 68939674.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68939674 = 2 ⋅34469837.

It can be written as a sum of positive squares in only one way, i.e., 42653961 + 5040025 = 6531^2 + 2245^2 .

It is not an unprimeable number, because it can be changed into a prime (47693981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11923495 + ... + 11923498.

Almost surely, 2^47693986 is an apocalyptic number.

47693986 is a deficient number, since it is larger than the sum of its proper divisors (23846996).

47693986 is a wasteful number, since it uses less digits than its factorization.

47693986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23846995.

The product of its digits is 1959552, while the sum is 52.

The square root of 47693986 is about 6906.0832604306. The cubic root of 47693986 is about 362.6501599066.

The spelling of 47693986 in words is "forty-seven million, six hundred ninety-three thousand, nine hundred eighty-six".