340853987 has 2 divisors, whose sum is σ = 340853988. Its totient is φ = 340853986.

The previous prime is 340853983. The next prime is 340854001. The reversal of 340853987 is 789358043.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 340853987 - 2² = 340853983 is a prime.

It is not a weakly prime, because it can be changed into another prime (340853983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170426993 + 170426994.

It is an arithmetic number, because the mean of its divisors is an integer number (170426994).

Almost surely, 2^340853987 is an apocalyptic number.

340853987 is a deficient number, since it is larger than the sum of its proper divisors (1).

340853987 is an equidigital number, since it uses as much as digits as its factorization.

340853987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 47.

The square root of 340853987 is about 18462.2313656828. The cubic root of 340853987 is about 698.5370719716.

The spelling of 340853987 in words is "three hundred forty million, eight hundred fifty-three thousand, nine hundred eighty-seven".