354420449 has 2 divisors, whose sum is σ = 354420450. Its totient is φ = 354420448.

The previous prime is 354420421. The next prime is 354420457. The reversal of 354420449 is 944024453.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 340033600 + 14386849 = 18440^2 + 3793^2 .

It is an emirp because it is prime and its reverse (944024453) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 354420449 - 2²⁴ = 337643233 is a prime.

It is a super-2 number, since 2×354420449² = 251227709338723202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (354420499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177210224 + 177210225.

It is an arithmetic number, because the mean of its divisors is an integer number (177210225).

Almost surely, 2^354420449 is an apocalyptic number.

It is an amenable number.

354420449 is a deficient number, since it is larger than the sum of its proper divisors (1).

354420449 is an equidigital number, since it uses as much as digits as its factorization.

354420449 is an evil number, because the sum of its binary digits is even.

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

The square root of 354420449 is about 18826.0577126492. The cubic root of 354420449 is about 707.6843482373.

The spelling of 354420449 in words is "three hundred fifty-four million, four hundred twenty thousand, four hundred forty-nine".