340658249 has 4 divisors (see below), whose sum is σ = 341687760. Its totient is φ = 339628740.

The previous prime is 340658237. The next prime is 340658321. The reversal of 340658249 is 942856043.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 340658249 - 2⁴ = 340658233 is a prime.

It is a super-2 number, since 2×340658249² = 232096085223492002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340658749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 514259 + ... + 514920.

It is an arithmetic number, because the mean of its divisors is an integer number (85421940).

Almost surely, 2^340658249 is an apocalyptic number.

It is an amenable number.

340658249 is a deficient number, since it is larger than the sum of its proper divisors (1029511).

340658249 is a wasteful number, since it uses less digits than its factorization.

340658249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029510.

The product of its (nonzero) digits is 207360, while the sum is 41.

The square root of 340658249 is about 18456.9295658839. The cubic root of 340658249 is about 698.4033329555.

The spelling of 340658249 in words is "three hundred forty million, six hundred fifty-eight thousand, two hundred forty-nine".