47970187 has 2 divisors, whose sum is σ = 47970188. Its totient is φ = 47970186.

The previous prime is 47970173. The next prime is 47970211. The reversal of 47970187 is 78107974.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47970187 - 2¹⁵ = 47937419 is a prime.

It is a super-2 number, since 2×47970187² = 4602277681629938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (47970487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23985093 + 23985094.

It is an arithmetic number, because the mean of its divisors is an integer number (23985094).

Almost surely, 2^47970187 is an apocalyptic number.

47970187 is a deficient number, since it is larger than the sum of its proper divisors (1).

47970187 is an equidigital number, since it uses as much as digits as its factorization.

47970187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 98784, while the sum is 43.

The square root of 47970187 is about 6926.0513281378. The cubic root of 47970187 is about 363.3488615720.

The spelling of 47970187 in words is "forty-seven million, nine hundred seventy thousand, one hundred eighty-seven".