354303997 has 2 divisors, whose sum is σ = 354303998. Its totient is φ = 354303996.

The previous prime is 354303949. The next prime is 354304007. The reversal of 354303997 is 799303453.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 318051556 + 36252441 = 17834^2 + 6021^2 .

It is a cyclic number.

It is not a de Polignac number, because 354303997 - 2²³ = 345915389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (354303097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177151998 + 177151999.

It is an arithmetic number, because the mean of its divisors is an integer number (177151999).

Almost surely, 2^354303997 is an apocalyptic number.

It is an amenable number.

354303997 is a deficient number, since it is larger than the sum of its proper divisors (1).

354303997 is an equidigital number, since it uses as much as digits as its factorization.

354303997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 306180, while the sum is 43.

The square root of 354303997 is about 18822.9646177216. The cubic root of 354303997 is about 707.6068317494.

The spelling of 354303997 in words is "three hundred fifty-four million, three hundred three thousand, nine hundred ninety-seven".