345139446 has 16 divisors (see below), whose sum is σ = 726609600. Its totient is φ = 108991368.

The previous prime is 345139409. The next prime is 345139447. The reversal of 345139446 is 644931543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345139447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1513656 + ... + 1513883.

It is an arithmetic number, because the mean of its divisors is an integer number (45413100).

Almost surely, 2^345139446 is an apocalyptic number.

345139446 is an abundant number, since it is smaller than the sum of its proper divisors (381470154).

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

345139446 is a wasteful number, since it uses less digits than its factorization.

345139446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3027563.

The product of its digits is 155520, while the sum is 39.

The square root of 345139446 is about 18577.9290019098. The cubic root of 345139446 is about 701.4523898775.

The spelling of 345139446 in words is "three hundred forty-five million, one hundred thirty-nine thousand, four hundred forty-six".