397541407 has 16 divisors (see below), whose sum is σ = 425829888. Its totient is φ = 370228320.

The previous prime is 397541401. The next prime is 397541411. The reversal of 397541407 is 704145793.

It is a cyclic number.

It is not a de Polignac number, because 397541407 - 2¹⁹ = 397017119 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 397541407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397541401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 534678 + ... + 535420.

It is an arithmetic number, because the mean of its divisors is an integer number (26614368).

Almost surely, 2^397541407 is an apocalyptic number.

397541407 is a deficient number, since it is larger than the sum of its proper divisors (28288481).

397541407 is a wasteful number, since it uses less digits than its factorization.

397541407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350.

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 397541407 is about 19938.4404355005. The cubic root of 397541407 is about 735.2936072268.

The spelling of 397541407 in words is "three hundred ninety-seven million, five hundred forty-one thousand, four hundred seven".