1959397 has 4 divisors (see below), whose sum is σ = 2137536. Its totient is φ = 1781260.

The previous prime is 1959371. The next prime is 1959401. The reversal of 1959397 is 7939591.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1959397 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 (1959317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89053 + ... + 89074.

It is an arithmetic number, because the mean of its divisors is an integer number (534384).

2^1959397 is an apocalyptic number.

It is an amenable number.

1959397 is a deficient number, since it is larger than the sum of its proper divisors (178139).

1959397 is a wasteful number, since it uses less digits than its factorization.

1959397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178138.

The product of its digits is 76545, while the sum is 43.

The square root of 1959397 is about 1399.7846262908. The cubic root of 1959397 is about 125.1336596964.

The spelling of 1959397 in words is "one million, nine hundred fifty-nine thousand, three hundred ninety-seven".