1977422 has 4 divisors (see below), whose sum is σ = 2966136. Its totient is φ = 988710.

The previous prime is 1977407. The next prime is 1977427. The reversal of 1977422 is 2247791.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×1977422³ = 23196333261016066344, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1977427) 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 as a sum of consecutive naturals, namely, 494354 + ... + 494357.

It is an arithmetic number, because the mean of its divisors is an integer number (741534).

2^1977422 is an apocalyptic number.

1977422 is a deficient number, since it is larger than the sum of its proper divisors (988714).

1977422 is an equidigital number, since it uses as much as digits as its factorization.

1977422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988713.

The product of its digits is 7056, while the sum is 32.

The square root of 1977422 is about 1406.2083771618. The cubic root of 1977422 is about 125.5162013549.

The spelling of 1977422 in words is "one million, nine hundred seventy-seven thousand, four hundred twenty-two".