1987396 has 6 divisors (see below), whose sum is σ = 3477950. Its totient is φ = 993696.

The previous prime is 1987373. The next prime is 1987411. The reversal of 1987396 is 6937891.

It can be written as a sum of positive squares in only one way, i.e., 1784896 + 202500 = 1336^2 + 450^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248421 + ... + 248428.

2^1987396 is an apocalyptic number.

It is an amenable number.

1987396 is a deficient number, since it is larger than the sum of its proper divisors (1490554).

1987396 is a wasteful number, since it uses less digits than its factorization.

1987396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496853 (or 496851 counting only the distinct ones).

The product of its digits is 81648, while the sum is 43.

The square root of 1987396 is about 1409.7503325057. The cubic root of 1987396 is about 125.7268796415.

The spelling of 1987396 in words is "one million, nine hundred eighty-seven thousand, three hundred ninety-six".