4092721387 has 4 divisors (see below), whose sum is σ = 4093036920. Its totient is φ = 4092405856.

The previous prime is 4092721357. The next prime is 4092721397. The reversal of 4092721387 is 7831272904.

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 4092721387 - 2¹⁵ = 4092688619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4092721357) 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, 137437 + ... + 164542.

It is an arithmetic number, because the mean of its divisors is an integer number (1023259230).

Almost surely, 2^4092721387 is an apocalyptic number.

4092721387 is a deficient number, since it is larger than the sum of its proper divisors (315533).

4092721387 is a wasteful number, since it uses less digits than its factorization.

4092721387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315532.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 4092721387 is about 63974.3807082179. The cubic root of 4092721387 is about 1599.5729833112.

The spelling of 4092721387 in words is "four billion, ninety-two million, seven hundred twenty-one thousand, three hundred eighty-seven".