349446630 has 64 divisors (see below), whose sum is σ = 906248448. Its totient is φ = 85726080.

The previous prime is 349446599. The next prime is 349446631. The reversal of 349446630 is 36644943.

It is a happy number.

It is a super-2 number, since 2×349446630² = 244225894436713800, which contains 22 as substring.

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 (349446631) 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 31 ways as a sum of consecutive naturals, for example, 127737 + ... + 130443.

It is an arithmetic number, because the mean of its divisors is an integer number (14160132).

Almost surely, 2^349446630 is an apocalyptic number.

349446630 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 349446630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (453124224).

349446630 is an abundant number, since it is smaller than the sum of its proper divisors (556801818).

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

349446630 is a wasteful number, since it uses less digits than its factorization.

349446630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3061.

The product of its (nonzero) digits is 186624, while the sum is 39.

The square root of 349446630 is about 18693.4916481646. The cubic root of 349446630 is about 704.3582712297.

The spelling of 349446630 in words is "three hundred forty-nine million, four hundred forty-six thousand, six hundred thirty".