397654105 has 8 divisors (see below), whose sum is σ = 477312264. Its totient is φ = 318038400.

The previous prime is 397654093. The next prime is 397654109. The reversal of 397654105 is 501456793.

It can be written as a sum of positive squares in 4 ways, for example, as 94789696 + 302864409 = 9736^2 + 17403^2 .

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

It is not a de Polignac number, because 397654105 - 2⁵ = 397654073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397654109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16125 + ... + 32485.

It is an arithmetic number, because the mean of its divisors is an integer number (59664033).

Almost surely, 2^397654105 is an apocalyptic number.

It is an amenable number.

397654105 is a deficient number, since it is larger than the sum of its proper divisors (79658159).

397654105 is a wasteful number, since it uses less digits than its factorization.

397654105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21227.

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 397654105 is about 19941.2663840590. The cubic root of 397654105 is about 735.3630828321.

It can be divided in two parts, 3976 and 54105, that added together give a square (58081 = 241²).

The spelling of 397654105 in words is "three hundred ninety-seven million, six hundred fifty-four thousand, one hundred five".