349420561 has 24 divisors (see below), whose sum is σ = 416901120. Its totient is φ = 286856640.

The previous prime is 349420553. The next prime is 349420571. The reversal of 349420561 is 165024943.

It is a happy number.

It is not a de Polignac number, because 349420561 - 2³ = 349420553 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349420501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 854125 + ... + 854533.

It is an arithmetic number, because the mean of its divisors is an integer number (17370880).

Almost surely, 2^349420561 is an apocalyptic number.

349420561 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

349420561 is a deficient number, since it is larger than the sum of its proper divisors (67480559).

349420561 is a wasteful number, since it uses less digits than its factorization.

349420561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605 (or 574 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 349420561 is about 18692.7943603946. The cubic root of 349420561 is about 704.3407555627.

The spelling of 349420561 in words is "three hundred forty-nine million, four hundred twenty thousand, five hundred sixty-one".