397052289 has 24 divisors (see below), whose sum is σ = 633664512. Its totient is φ = 238296960.
The previous prime is 397052269. The next prime is 397052317. The reversal of 397052289 is 982250793.
It is not a de Polignac number, because 397052289 - 213 = 397044097 is a prime.
It is a Curzon number.
It is not an unprimeable number, because it can be changed into a prime (397052209) 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 23 ways as a sum of consecutive naturals, for example, 52897 + ... + 59934.
It is an arithmetic number, because the mean of its divisors is an integer number (26402688).
Almost surely, 2397052289 is an apocalyptic number.
It is an amenable number.
397052289 is a deficient number, since it is larger than the sum of its proper divisors (236612223).
397052289 is a wasteful number, since it uses less digits than its factorization.
397052289 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 112877 (or 112874 counting only the distinct ones).
The product of its (nonzero) digits is 272160, while the sum is 45.
The square root of 397052289 is about 19926.1709568095. The cubic root of 397052289 is about 734.9919254979.
The spelling of 397052289 in words is "three hundred ninety-seven million, fifty-two thousand, two hundred eighty-nine".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.063 sec. • engine limits •