397487087 has 8 divisors (see below), whose sum is σ = 428613360. Its totient is φ = 367381440.

The previous prime is 397487063. The next prime is 397487093. The reversal of 397487087 is 780784793.

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

It is a cyclic number.

It is not a de Polignac number, because 397487087 - 2¹² = 397482991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397487017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254348 + ... + 255905.

It is an arithmetic number, because the mean of its divisors is an integer number (53576670).

Almost surely, 2^397487087 is an apocalyptic number.

397487087 is a deficient number, since it is larger than the sum of its proper divisors (31126273).

397487087 is a wasteful number, since it uses less digits than its factorization.

397487087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510313.

The product of its (nonzero) digits is 2370816, while the sum is 53.

The square root of 397487087 is about 19937.0781961651. The cubic root of 397487087 is about 735.2601155641.

The spelling of 397487087 in words is "three hundred ninety-seven million, four hundred eighty-seven thousand, eighty-seven".