344479987 has 2 divisors, whose sum is σ = 344479988. Its totient is φ = 344479986.

The previous prime is 344479981. The next prime is 344479999. The reversal of 344479987 is 789974443.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 344479987 - 2³ = 344479979 is a prime.

It is a super-2 number, since 2×344479987² = 237332922887040338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (344479981) 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 as a sum of consecutive naturals, namely, 172239993 + 172239994.

It is an arithmetic number, because the mean of its divisors is an integer number (172239994).

Almost surely, 2^344479987 is an apocalyptic number.

344479987 is a deficient number, since it is larger than the sum of its proper divisors (1).

344479987 is an equidigital number, since it uses as much as digits as its factorization.

344479987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6096384, while the sum is 55.

The square root of 344479987 is about 18560.1720627800. The cubic root of 344479987 is about 701.0053492903.

The spelling of 344479987 in words is "three hundred forty-four million, four hundred seventy-nine thousand, nine hundred eighty-seven".