345890249 has 8 divisors (see below), whose sum is σ = 353548800. Its totient is φ = 338244256.

The previous prime is 345890201. The next prime is 345890257. The reversal of 345890249 is 942098543.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 345890249 - 2⁸ = 345889993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345890549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72077 + ... + 76725.

It is an arithmetic number, because the mean of its divisors is an integer number (44193600).

Almost surely, 2^345890249 is an apocalyptic number.

It is an amenable number.

345890249 is a deficient number, since it is larger than the sum of its proper divisors (7658551).

345890249 is a wasteful number, since it uses less digits than its factorization.

345890249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6279.

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 345890249 is about 18598.1248786000. The cubic root of 345890249 is about 701.9606589642.

The spelling of 345890249 in words is "three hundred forty-five million, eight hundred ninety thousand, two hundred forty-nine".