1973427 has 4 divisors (see below), whose sum is σ = 2631240. Its totient is φ = 1315616.

The previous prime is 1973417. The next prime is 1973431. The reversal of 1973427 is 7243791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7243791 = 3 ⋅2414597.

It is a cyclic number.

It is not a de Polignac number, because 1973427 - 2⁷ = 1973299 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (1973407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328902 + ... + 328907.

It is an arithmetic number, because the mean of its divisors is an integer number (657810).

2^1973427 is an apocalyptic number.

1973427 is a deficient number, since it is larger than the sum of its proper divisors (657813).

1973427 is an equidigital number, since it uses as much as digits as its factorization.

1973427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657812.

The product of its digits is 10584, while the sum is 33.

The square root of 1973427 is about 1404.7871724927. The cubic root of 1973427 is about 125.4316172702.

The spelling of 1973427 in words is "one million, nine hundred seventy-three thousand, four hundred twenty-seven".