1979933087 has 4 divisors (see below), whose sum is σ = 2159927016. Its totient is φ = 1799939160.

The previous prime is 1979933069. The next prime is 1979933119. The reversal of 1979933087 is 7803399791.

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

It is a cyclic number.

It is not a de Polignac number, because 1979933087 - 2¹⁴ = 1979916703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1979933027) 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, 89996948 + ... + 89996969.

It is an arithmetic number, because the mean of its divisors is an integer number (539981754).

Almost surely, 2^1979933087 is an apocalyptic number.

1979933087 is a deficient number, since it is larger than the sum of its proper divisors (179993929).

1979933087 is a wasteful number, since it uses less digits than its factorization.

1979933087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179993928.

The product of its (nonzero) digits is 2571912, while the sum is 56.

The square root of 1979933087 is about 44496.4390372983. The cubic root of 1979933087 is about 1255.6930901751.

The spelling of 1979933087 in words is "one billion, nine hundred seventy-nine million, nine hundred thirty-three thousand, eighty-seven".