340860491 has 2 divisors, whose sum is σ = 340860492. Its totient is φ = 340860490.

The previous prime is 340860479. The next prime is 340860599. The reversal of 340860491 is 194068043.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 340860491 - 2¹⁸ = 340598347 is a prime.

It is a super-2 number, since 2×340860491² = 232371748649522162, which contains 22 as substring.

It is a Chen prime.

It is equal to p_18338561 and since 340860491 and 18338561 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (340860451) 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, 170430245 + 170430246.

It is an arithmetic number, because the mean of its divisors is an integer number (170430246).

Almost surely, 2^340860491 is an apocalyptic number.

340860491 is a deficient number, since it is larger than the sum of its proper divisors (1).

340860491 is an equidigital number, since it uses as much as digits as its factorization.

340860491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 340860491 is about 18462.4075082314. The cubic root of 340860491 is about 698.5415149847.

The spelling of 340860491 in words is "three hundred forty million, eight hundred sixty thousand, four hundred ninety-one".