1972977 has 4 divisors (see below), whose sum is σ = 2630640. Its totient is φ = 1315316.

The previous prime is 1972967. The next prime is 1972981. The reversal of 1972977 is 7792791.

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.

It is a cyclic number.

It is not a de Polignac number, because 1972977 - 2⁶ = 1972913 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (1972967) 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, 328827 + ... + 328832.

It is an arithmetic number, because the mean of its divisors is an integer number (657660).

2^1972977 is an apocalyptic number.

It is an amenable number.

1972977 is a deficient number, since it is larger than the sum of its proper divisors (657663).

1972977 is an equidigital number, since it uses as much as digits as its factorization.

1972977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657662.

The product of its digits is 55566, while the sum is 42.

The square root of 1972977 is about 1404.6269967504. The cubic root of 1972977 is about 125.4220825001.

The spelling of 1972977 in words is "one million, nine hundred seventy-two thousand, nine hundred seventy-seven".