3874919947 has 2 divisors, whose sum is σ = 3874919948. Its totient is φ = 3874919946.

The previous prime is 3874919903. The next prime is 3874919953. The reversal of 3874919947 is 7499194783.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3874919947 is a prime.

It is not a weakly prime, because it can be changed into another prime (3874919957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1937459973 + 1937459974.

It is an arithmetic number, because the mean of its divisors is an integer number (1937459974).

Almost surely, 2^3874919947 is an apocalyptic number.

3874919947 is a deficient number, since it is larger than the sum of its proper divisors (1).

3874919947 is an equidigital number, since it uses as much as digits as its factorization.

3874919947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13716864, while the sum is 61.

The square root of 3874919947 is about 62248.8549854533. The cubic root of 3874919947 is about 1570.6795099085.

The spelling of 3874919947 in words is "three billion, eight hundred seventy-four million, nine hundred nineteen thousand, nine hundred forty-seven".