1977941 has 4 divisors (see below), whose sum is σ = 2260512. Its totient is φ = 1695372.

The previous prime is 1977929. The next prime is 1977953. The reversal of 1977941 is 1497791.

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: 1497791 = 197 ⋅7603.

It is an interprime number because it is at equal distance from previous prime (1977929) and next prime (1977953).

It is not a de Polignac number, because 1977941 - 2¹⁰ = 1976917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1977895 and 1977904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1977961) 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, 141275 + ... + 141288.

It is an arithmetic number, because the mean of its divisors is an integer number (565128).

2^1977941 is an apocalyptic number.

It is an amenable number.

1977941 is a deficient number, since it is larger than the sum of its proper divisors (282571).

1977941 is an equidigital number, since it uses as much as digits as its factorization.

1977941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282570.

The product of its digits is 15876, while the sum is 38.

The square root of 1977941 is about 1406.3929038501. The cubic root of 1977941 is about 125.5271815116.

The spelling of 1977941 in words is "one million, nine hundred seventy-seven thousand, nine hundred forty-one".