345555444 has 24 divisors (see below), whose sum is σ = 868319200. Its totient is φ = 106324704.

The previous prime is 345555433. The next prime is 345555449. The reversal of 345555444 is 444555543.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345555449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1107394 + ... + 1107705.

Almost surely, 2^345555444 is an apocalyptic number.

It is an amenable number.

345555444 is an abundant number, since it is smaller than the sum of its proper divisors (522763756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

345555444 is a wasteful number, since it uses less digits than its factorization.

345555444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2215119 (or 2215117 counting only the distinct ones).

The product of its digits is 480000, while the sum is 39.

The square root of 345555444 is about 18589.1216575717. The cubic root of 345555444 is about 701.7340978809.

Subtracting 345555444 from its reverse (444555543), we obtain a palindrome (99000099).

The spelling of 345555444 in words is "three hundred forty-five million, five hundred fifty-five thousand, four hundred forty-four".