1947923 has 2 divisors, whose sum is σ = 1947924. Its totient is φ = 1947922.

The previous prime is 1947919. The next prime is 1947941. The reversal of 1947923 is 3297491.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1947923 - 2² = 1947919 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1947973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 973961 + 973962.

It is an arithmetic number, because the mean of its divisors is an integer number (973962).

2^1947923 is an apocalyptic number.

1947923 is a deficient number, since it is larger than the sum of its proper divisors (1).

1947923 is an equidigital number, since it uses as much as digits as its factorization.

1947923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 35.

The square root of 1947923 is about 1395.6801209446. The cubic root of 1947923 is about 124.8889253286. Note that the first 3 decimals are identical.

The spelling of 1947923 in words is "one million, nine hundred forty-seven thousand, nine hundred twenty-three".