1955659 has 4 divisors (see below), whose sum is σ = 2003400. Its totient is φ = 1907920.

The previous prime is 1955641. The next prime is 1955671. The reversal of 1955659 is 9565591.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1955659 - 2⁷ = 1955531 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1955609) 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, 23809 + ... + 23890.

It is an arithmetic number, because the mean of its divisors is an integer number (500850).

2^1955659 is an apocalyptic number.

1955659 is a deficient number, since it is larger than the sum of its proper divisors (47741).

1955659 is an equidigital number, since it uses as much as digits as its factorization.

1955659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47740.

The product of its digits is 60750, while the sum is 40.

The square root of 1955659 is about 1398.4487834740. The cubic root of 1955659 is about 125.0540353048.

The spelling of 1955659 in words is "one million, nine hundred fifty-five thousand, six hundred fifty-nine".