344639481 has 16 divisors (see below), whose sum is σ = 472032960. Its totient is φ = 223534080.

The previous prime is 344639479. The next prime is 344639501. The reversal of 344639481 is 184936443.

It is not a de Polignac number, because 344639481 - 2¹ = 344639479 is a prime.

It is a super-2 number, since 2×344639481² = 237552743727898722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (344639401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42921 + ... + 50313.

It is an arithmetic number, because the mean of its divisors is an integer number (29502060).

Almost surely, 2^344639481 is an apocalyptic number.

It is an amenable number.

344639481 is a deficient number, since it is larger than the sum of its proper divisors (127393479).

344639481 is a wasteful number, since it uses less digits than its factorization.

344639481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7816.

The product of its digits is 248832, while the sum is 42.

The square root of 344639481 is about 18564.4682390851. The cubic root of 344639481 is about 701.1135209311.

The spelling of 344639481 in words is "three hundred forty-four million, six hundred thirty-nine thousand, four hundred eighty-one".