7487489 has 4 divisors (see below), whose sum is σ = 7813056. Its totient is φ = 7161924.

The previous prime is 7487453. The next prime is 7487503. The reversal of 7487489 is 9847847.

7487489 = 161² + 162² + ... + 298².

7487489 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-7487489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7487419) 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, 162749 + ... + 162794.

It is an arithmetic number, because the mean of its divisors is an integer number (1953264).

It is a Proth number, since it is equal to 457 ⋅ 2¹⁴ + 1 and 457 < 2¹⁴.

Almost surely, 2^7487489 is an apocalyptic number.

It is an amenable number.

7487489 is a deficient number, since it is larger than the sum of its proper divisors (325567).

7487489 is a wasteful number, since it uses less digits than its factorization.

7487489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325566.

The product of its digits is 451584, while the sum is 47.

The square root of 7487489 is about 2736.3276485100. The cubic root of 7487489 is about 195.6344794612.

The spelling of 7487489 in words is "seven million, four hundred eighty-seven thousand, four hundred eighty-nine".