396361729 has 8 divisors (see below), whose sum is σ = 399388608. Its totient is φ = 393341520.

The previous prime is 396361703. The next prime is 396361739. The reversal of 396361729 is 927163693.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 396361729 - 2¹⁷ = 396230657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (396361739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245844 + ... + 247450.

It is an arithmetic number, because the mean of its divisors is an integer number (49923576).

It is a Proth number, since it is equal to 189 ⋅ 2²¹ + 1 and 189 < 2²¹.

Almost surely, 2^396361729 is an apocalyptic number.

It is an amenable number.

396361729 is a deficient number, since it is larger than the sum of its proper divisors (3026879).

396361729 is a wasteful number, since it uses less digits than its factorization.

396361729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3335.

The product of its digits is 367416, while the sum is 46.

The square root of 396361729 is about 19908.8354506234. The cubic root of 396361729 is about 734.5655748024.

The spelling of 396361729 in words is "three hundred ninety-six million, three hundred sixty-one thousand, seven hundred twenty-nine".