397084129 has 4 divisors (see below), whose sum is σ = 427629076. Its totient is φ = 366539184.

The previous prime is 397084123. The next prime is 397084151. The reversal of 397084129 is 921480793.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 66389904 + 330694225 = 8148^2 + 18185^2 .

It is a cyclic number.

It is not a de Polignac number, because 397084129 - 2⁷ = 397084001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397084123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15272454 + ... + 15272479.

It is an arithmetic number, because the mean of its divisors is an integer number (106907269).

Almost surely, 2^397084129 is an apocalyptic number.

It is an amenable number.

397084129 is a deficient number, since it is larger than the sum of its proper divisors (30544947).

397084129 is a wasteful number, since it uses less digits than its factorization.

397084129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30544946.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 397084129 is about 19926.9698900761. The cubic root of 397084129 is about 735.0115715395.

The spelling of 397084129 in words is "three hundred ninety-seven million, eighty-four thousand, one hundred twenty-nine".