34043987 has 2 divisors, whose sum is σ = 34043988. Its totient is φ = 34043986.

The previous prime is 34043957. The next prime is 34044091. The reversal of 34043987 is 78934043.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 34043987 - 2⁶ = 34043923 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 34043987.

It is not a weakly prime, because it can be changed into another prime (34043957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17021993 + 17021994.

It is an arithmetic number, because the mean of its divisors is an integer number (17021994).

Almost surely, 2^34043987 is an apocalyptic number.

34043987 is a deficient number, since it is larger than the sum of its proper divisors (1).

34043987 is an equidigital number, since it uses as much as digits as its factorization.

34043987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 34043987 is about 5834.7225298209. The cubic root of 34043987 is about 324.1008265941.

The spelling of 34043987 in words is "thirty-four million, forty-three thousand, nine hundred eighty-seven".