92721487 has 4 divisors (see below), whose sum is σ = 96752880. Its totient is φ = 88690096.

The previous prime is 92721481. The next prime is 92721493. The reversal of 92721487 is 78412729.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78412729 = 1297 ⋅60457.

It is an interprime number because it is at equal distance from previous prime (92721481) and next prime (92721493).

It is a cyclic number.

It is not a de Polignac number, because 92721487 - 2¹¹ = 92719439 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 (92721481) 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, 2015662 + ... + 2015707.

It is an arithmetic number, because the mean of its divisors is an integer number (24188220).

Almost surely, 2^92721487 is an apocalyptic number.

92721487 is a deficient number, since it is larger than the sum of its proper divisors (4031393).

92721487 is a wasteful number, since it uses less digits than its factorization.

92721487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4031392.

The product of its digits is 56448, while the sum is 40.

The square root of 92721487 is about 9629.1997071408. The cubic root of 92721487 is about 452.6127627156.

The spelling of 92721487 in words is "ninety-two million, seven hundred twenty-one thousand, four hundred eighty-seven".