1958971 has 6 divisors (see below), whose sum is σ = 2278860. Its totient is φ = 1679076.

The previous prime is 1958959. The next prime is 1958993. The reversal of 1958971 is 1798591.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1958971 is a prime.

It is a Duffinian number.

1958971 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1958941) 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 5 ways as a sum of consecutive naturals, for example, 19941 + ... + 20038.

It is an arithmetic number, because the mean of its divisors is an integer number (379810).

2^1958971 is an apocalyptic number.

1958971 is a deficient number, since it is larger than the sum of its proper divisors (319889).

1958971 is an equidigital number, since it uses as much as digits as its factorization.

1958971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39993 (or 39986 counting only the distinct ones).

The product of its digits is 22680, while the sum is 40.

The square root of 1958971 is about 1399.6324517530. The cubic root of 1958971 is about 125.1245904432.

The spelling of 1958971 in words is "one million, nine hundred fifty-eight thousand, nine hundred seventy-one".