345590239 has 4 divisors (see below), whose sum is σ = 347381056. Its totient is φ = 343799424.

The previous prime is 345590237. The next prime is 345590251. The reversal of 345590239 is 932095543.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 345590239 - 2¹ = 345590237 is a prime.

It is a super-2 number, since 2×345590239² = 238865226584154242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345590237) 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, 895119 + ... + 895504.

It is an arithmetic number, because the mean of its divisors is an integer number (86845264).

Almost surely, 2^345590239 is an apocalyptic number.

345590239 is a deficient number, since it is larger than the sum of its proper divisors (1790817).

345590239 is a wasteful number, since it uses less digits than its factorization.

345590239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1790816.

The product of its (nonzero) digits is 145800, while the sum is 40.

The square root of 345590239 is about 18590.0575308416. The cubic root of 345590239 is about 701.7576503179.

The spelling of 345590239 in words is "three hundred forty-five million, five hundred ninety thousand, two hundred thirty-nine".