354440249 has 2 divisors, whose sum is σ = 354440250. Its totient is φ = 354440248.

The previous prime is 354440243. The next prime is 354440257. The reversal of 354440249 is 942044453.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 344473600 + 9966649 = 18560^2 + 3157^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-354440249 is a prime.

It is a super-2 number, since 2×354440249² = 251255780222364002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (354440243) 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 as a sum of consecutive naturals, namely, 177220124 + 177220125.

It is an arithmetic number, because the mean of its divisors is an integer number (177220125).

Almost surely, 2^354440249 is an apocalyptic number.

It is an amenable number.

354440249 is a deficient number, since it is larger than the sum of its proper divisors (1).

354440249 is an equidigital number, since it uses as much as digits as its factorization.

354440249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 35.

The square root of 354440249 is about 18826.5835721726. The cubic root of 354440249 is about 707.6975264547.

The spelling of 354440249 in words is "three hundred fifty-four million, four hundred forty thousand, two hundred forty-nine".