349440563 has 4 divisors (see below), whose sum is σ = 349817640. Its totient is φ = 349063488.

The previous prime is 349440551. The next prime is 349440569. The reversal of 349440563 is 365044943.

It is a happy number.

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 349440563 - 2¹⁶ = 349375027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (349440569) 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, 187145 + ... + 189002.

It is an arithmetic number, because the mean of its divisors is an integer number (87454410).

Almost surely, 2^349440563 is an apocalyptic number.

349440563 is a deficient number, since it is larger than the sum of its proper divisors (377077).

349440563 is an equidigital number, since it uses as much as digits as its factorization.

349440563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377076.

The product of its (nonzero) digits is 155520, while the sum is 38.

The square root of 349440563 is about 18693.3293717304. The cubic root of 349440563 is about 704.3541949121.

The spelling of 349440563 in words is "three hundred forty-nine million, four hundred forty thousand, five hundred sixty-three".