397260587 has 4 divisors (see below), whose sum is σ = 397341120. Its totient is φ = 397180056.

The previous prime is 397260583. The next prime is 397260593. The reversal of 397260587 is 785062793.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 785062793 = 41 ⋅19147873.

It is a cyclic number.

It is not a de Polignac number, because 397260587 - 2² = 397260583 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397260581) 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 3 ways as a sum of consecutive naturals, for example, 32348 + ... + 42905.

It is an arithmetic number, because the mean of its divisors is an integer number (99335280).

Almost surely, 2^397260587 is an apocalyptic number.

397260587 is a deficient number, since it is larger than the sum of its proper divisors (80533).

397260587 is an equidigital number, since it uses as much as digits as its factorization.

397260587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80532.

The product of its (nonzero) digits is 635040, while the sum is 47.

The square root of 397260587 is about 19931.3970157638. The cubic root of 397260587 is about 735.1204313126.

The spelling of 397260587 in words is "three hundred ninety-seven million, two hundred sixty thousand, five hundred eighty-seven".