345022989 has 4 divisors (see below), whose sum is σ = 460030656. Its totient is φ = 230015324.

The previous prime is 345022987. The next prime is 345023011. The reversal of 345022989 is 989220543.

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, and also an emirpimes, since its reverse is a distinct semiprime: 989220543 = 3 ⋅329740181.

It is a cyclic number.

It is not a de Polignac number, because 345022989 - 2¹ = 345022987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 345022989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345022987) 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, 57503829 + ... + 57503834.

It is an arithmetic number, because the mean of its divisors is an integer number (115007664).

Almost surely, 2^345022989 is an apocalyptic number.

It is an amenable number.

345022989 is a deficient number, since it is larger than the sum of its proper divisors (115007667).

345022989 is a wasteful number, since it uses less digits than its factorization.

345022989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115007666.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 345022989 is about 18574.7944537753. The cubic root of 345022989 is about 701.3734862812.

The spelling of 345022989 in words is "three hundred forty-five million, twenty-two thousand, nine hundred eighty-nine".