7722489 has 8 divisors (see below), whose sum is σ = 10378240. Its totient is φ = 5107536.

The previous prime is 7722479. The next prime is 7722527. The reversal of 7722489 is 9842277.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7722489 - 2⁷ = 7722361 is a prime.

It is a d-powerful number, because it can be written as 7⁴ + 7⁷ + 2⁵ + 2²¹ + 4⁷ + 8 + 9⁷ .

It is a Duffinian number.

7722489 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7722409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9754 + ... + 10515.

It is an arithmetic number, because the mean of its divisors is an integer number (1297280).

Almost surely, 2^7722489 is an apocalyptic number.

It is an amenable number.

7722489 is a deficient number, since it is larger than the sum of its proper divisors (2655751).

7722489 is a wasteful number, since it uses less digits than its factorization.

7722489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20399.

The product of its digits is 56448, while the sum is 39.

The square root of 7722489 is about 2778.9366671445. The cubic root of 7722489 is about 197.6601403729.

The spelling of 7722489 in words is "seven million, seven hundred twenty-two thousand, four hundred eighty-nine".