2987947 has 2 divisors, whose sum is σ = 2987948. Its totient is φ = 2987946.

The previous prime is 2987923. The next prime is 2987969. The reversal of 2987947 is 7497892.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2987947 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2987897 and 2987906.

It is not a weakly prime, because it can be changed into another prime (2987147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1493973 + 1493974.

It is an arithmetic number, because the mean of its divisors is an integer number (1493974).

2^2987947 is an apocalyptic number.

2987947 is a deficient number, since it is larger than the sum of its proper divisors (1).

2987947 is an equidigital number, since it uses as much as digits as its factorization.

2987947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 46.

The square root of 2987947 is about 1728.5679043648. The cubic root of 2987947 is about 144.0315485146.

The spelling of 2987947 in words is "two million, nine hundred eighty-seven thousand, nine hundred forty-seven".