354398129 has 2 divisors, whose sum is σ = 354398130. Its totient is φ = 354398128.

The previous prime is 354398123. The next prime is 354398273. The reversal of 354398129 is 921893453.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196644529 + 157753600 = 14023^2 + 12560^2 .

It is a cyclic number.

It is not a de Polignac number, because 354398129 - 2¹⁶ = 354332593 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 354398129.

It is not a weakly prime, because it can be changed into another prime (354398123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177199064 + 177199065.

It is an arithmetic number, because the mean of its divisors is an integer number (177199065).

Almost surely, 2^354398129 is an apocalyptic number.

It is an amenable number.

354398129 is a deficient number, since it is larger than the sum of its proper divisors (1).

354398129 is an equidigital number, since it uses as much as digits as its factorization.

354398129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 44.

The square root of 354398129 is about 18825.4649079379. The cubic root of 354398129 is about 707.6694922038.

The spelling of 354398129 in words is "three hundred fifty-four million, three hundred ninety-eight thousand, one hundred twenty-nine".