1964947 has 2 divisors, whose sum is σ = 1964948. Its totient is φ = 1964946.

The previous prime is 1964927. The next prime is 1964951. The reversal of 1964947 is 7494691.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1964947 is a prime.

It is a super-2 number, since 2×1964947² = 7722033425618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1964917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 982473 + 982474.

It is an arithmetic number, because the mean of its divisors is an integer number (982474).

2^1964947 is an apocalyptic number.

1964947 is a deficient number, since it is larger than the sum of its proper divisors (1).

1964947 is an equidigital number, since it uses as much as digits as its factorization.

1964947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 40.

The square root of 1964947 is about 1401.7656722862. The cubic root of 1964947 is about 125.2516955214.

The spelling of 1964947 in words is "one million, nine hundred sixty-four thousand, nine hundred forty-seven".