1987379 has 4 divisors (see below), whose sum is σ = 2051520. Its totient is φ = 1923240.

The previous prime is 1987373. The next prime is 1987411. The reversal of 1987379 is 9737891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9737891 = 59 ⋅165049.

It is not a de Polignac number, because 1987379 - 2⁸ = 1987123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1987373) 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, 32024 + ... + 32085.

It is an arithmetic number, because the mean of its divisors is an integer number (512880).

2^1987379 is an apocalyptic number.

1987379 is a deficient number, since it is larger than the sum of its proper divisors (64141).

1987379 is an equidigital number, since it uses as much as digits as its factorization.

1987379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64140.

The product of its digits is 95256, while the sum is 44.

The square root of 1987379 is about 1409.7443030564. The cubic root of 1987379 is about 125.7265211551.

The spelling of 1987379 in words is "one million, nine hundred eighty-seven thousand, three hundred seventy-nine".