1958949 has 6 divisors (see below), whose sum is σ = 2829606. Its totient is φ = 1305960.

The previous prime is 1958941. The next prime is 1958959. The reversal of 1958949 is 9498591.

It can be written as a sum of positive squares in only one way, i.e., 1664100 + 294849 = 1290^2 + 543^2 .

It is not a de Polignac number, because 1958949 - 2³ = 1958941 is a prime.

It is a congruent 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 (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 108822 + ... + 108839.

It is an arithmetic number, because the mean of its divisors is an integer number (471601).

2^1958949 is an apocalyptic number.

It is an amenable number.

1958949 is a deficient number, since it is larger than the sum of its proper divisors (870657).

1958949 is a wasteful number, since it uses less digits than its factorization.

1958949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217667 (or 217664 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 1958949 is about 1399.6245925247. The cubic root of 1958949 is about 125.1241220423.

The spelling of 1958949 in words is "one million, nine hundred fifty-eight thousand, nine hundred forty-nine".