344621401 has 4 divisors (see below), whose sum is σ = 349765072. Its totient is φ = 339477732.

The previous prime is 344621377. The next prime is 344621461. The reversal of 344621401 is 104126443.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 104126443 = 29 ⋅3590567.

It is a cyclic number.

It is not a de Polignac number, because 344621401 - 2⁵ = 344621369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (344621461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2571735 + ... + 2571868.

It is an arithmetic number, because the mean of its divisors is an integer number (87441268).

Almost surely, 2^344621401 is an apocalyptic number.

It is an amenable number.

344621401 is a deficient number, since it is larger than the sum of its proper divisors (5143671).

344621401 is an equidigital number, since it uses as much as digits as its factorization.

344621401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5143670.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 344621401 is about 18563.9812809645. The cubic root of 344621401 is about 701.1012604339.

Adding to 344621401 its reverse (104126443), we get a palindrome (448747844).

The spelling of 344621401 in words is "three hundred forty-four million, six hundred twenty-one thousand, four hundred one".