340011989 has 2 divisors, whose sum is σ = 340011990. Its totient is φ = 340011988.

The previous prime is 340011983. The next prime is 340012003. The reversal of 340011989 is 989110043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 318015889 + 21996100 = 17833^2 + 4690^2 .

It is a cyclic number.

It is not a de Polignac number, because 340011989 - 2⁸ = 340011733 is a prime.

It is a super-2 number, since 2×340011989² = 231216305327472242, which contains 22 as substring.

It is equal to p_18295226 and since 340011989 and 18295226 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340011983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170005994 + 170005995.

It is an arithmetic number, because the mean of its divisors is an integer number (170005995).

Almost surely, 2^340011989 is an apocalyptic number.

It is an amenable number.

340011989 is a deficient number, since it is larger than the sum of its proper divisors (1).

340011989 is an equidigital number, since it uses as much as digits as its factorization.

340011989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 340011989 is about 18439.4140091273. The cubic root of 340011989 is about 697.9614082817.

The spelling of 340011989 in words is "three hundred forty million, eleven thousand, nine hundred eighty-nine".