190847947 has 2 divisors, whose sum is σ = 190847948. Its totient is φ = 190847946.

The previous prime is 190847941. The next prime is 190847971. The reversal of 190847947 is 749748091.

190847947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (749748091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 190847947 - 2⁷ = 190847819 is a prime.

It is a super-2 number, since 2×190847947² = 72845877748229618, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 190847947.

It is not a weakly prime, because it can be changed into another prime (190847941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95423973 + 95423974.

It is an arithmetic number, because the mean of its divisors is an integer number (95423974).

Almost surely, 2^190847947 is an apocalyptic number.

190847947 is a deficient number, since it is larger than the sum of its proper divisors (1).

190847947 is an equidigital number, since it uses as much as digits as its factorization.

190847947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 49.

The square root of 190847947 is about 13814.7727813381. The cubic root of 190847947 is about 575.7436598483.

The spelling of 190847947 in words is "one hundred ninety million, eight hundred forty-seven thousand, nine hundred forty-seven".