1983967 has 2 divisors, whose sum is σ = 1983968. Its totient is φ = 1983966.

The previous prime is 1983931. The next prime is 1983979. The reversal of 1983967 is 7693891.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1983967 - 2¹¹ = 1981919 is a prime.

It is a super-2 number, since 2×1983967² = 7872250114178, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1983997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 991983 + 991984.

It is an arithmetic number, because the mean of its divisors is an integer number (991984).

2^1983967 is an apocalyptic number.

1983967 is a deficient number, since it is larger than the sum of its proper divisors (1).

1983967 is an equidigital number, since it uses as much as digits as its factorization.

1983967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 43.

The square root of 1983967 is about 1408.5336346712. The cubic root of 1983967 is about 125.6545294146.

The spelling of 1983967 in words is "one million, nine hundred eighty-three thousand, nine hundred sixty-seven".