345439090 has 8 divisors (see below), whose sum is σ = 621790380. Its totient is φ = 138175632.

The previous prime is 345439027. The next prime is 345439091. The reversal of 345439090 is 90934543.

It can be written as a sum of positive squares in 2 ways, for example, as 296425089 + 49014001 = 17217^2 + 7001^2 .

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

It is not an unprimeable number, because it can be changed into a prime (345439091) 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 3 ways as a sum of consecutive naturals, for example, 17271945 + ... + 17271964.

Almost surely, 2^345439090 is an apocalyptic number.

345439090 is a deficient number, since it is larger than the sum of its proper divisors (276351290).

345439090 is a wasteful number, since it uses less digits than its factorization.

345439090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34543916.

The product of its (nonzero) digits is 58320, while the sum is 37.

The square root of 345439090 is about 18585.9917679956. The cubic root of 345439090 is about 701.6553273714.

The spelling of 345439090 in words is "three hundred forty-five million, four hundred thirty-nine thousand, ninety".