349770401 has 4 divisors (see below), whose sum is σ = 355504404. Its totient is φ = 344036400.

The previous prime is 349770397. The next prime is 349770413. The reversal of 349770401 is 104077943.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104077943 = 31 ⋅3357353.

It can be written as a sum of positive squares in 2 ways, for example, as 25806400 + 323964001 = 5080^2 + 17999^2 .

It is a cyclic number.

It is not a de Polignac number, because 349770401 - 2² = 349770397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (349773401) 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, 2866910 + ... + 2867031.

It is an arithmetic number, because the mean of its divisors is an integer number (88876101).

Almost surely, 2^349770401 is an apocalyptic number.

It is an amenable number.

349770401 is a deficient number, since it is larger than the sum of its proper divisors (5734003).

349770401 is an equidigital number, since it uses as much as digits as its factorization.

349770401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5734002.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 349770401 is about 18702.1496358039. The cubic root of 349770401 is about 704.5757392367.

The spelling of 349770401 in words is "three hundred forty-nine million, seven hundred seventy thousand, four hundred one".