1996949 has 2 divisors, whose sum is σ = 1996950. Its totient is φ = 1996948.

The previous prime is 1996937. The next prime is 1996979. The reversal of 1996949 is 9496991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1909924 + 87025 = 1382^2 + 295^2 .

It is a cyclic number.

It is not a de Polignac number, because 1996949 - 2⁴ = 1996933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1996979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 998474 + 998475.

It is an arithmetic number, because the mean of its divisors is an integer number (998475).

2^1996949 is an apocalyptic number.

It is an amenable number.

1996949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1996949 is an equidigital number, since it uses as much as digits as its factorization.

1996949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 157464, while the sum is 47.

The square root of 1996949 is about 1413.1344592784. The cubic root of 1996949 is about 125.9280053984.

The spelling of 1996949 in words is "one million, nine hundred ninety-six thousand, nine hundred forty-nine".