1973401 has 4 divisors (see below), whose sum is σ = 1991952. Its totient is φ = 1954852.

The previous prime is 1973381. The next prime is 1973407. The reversal of 1973401 is 1043791.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1043791 = 7 ⋅149113.

It is a cyclic number.

It is not a de Polignac number, because 1973401 - 2⁵ = 1973369 is a prime.

It is a Duffinian number.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9115 + ... + 9328.

It is an arithmetic number, because the mean of its divisors is an integer number (497988).

2^1973401 is an apocalyptic number.

It is an amenable number.

1973401 is a deficient number, since it is larger than the sum of its proper divisors (18551).

1973401 is a wasteful number, since it uses less digits than its factorization.

1973401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18550.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 1973401 is about 1404.7779183914. Note that the first 3 decimals coincide. The cubic root of 1973401 is about 125.4310664119.

The spelling of 1973401 in words is "one million, nine hundred seventy-three thousand, four hundred one".