7489999 has 8 divisors (see below), whose sum is σ = 8224848. Its totient is φ = 6764160.

The previous prime is 7489987. The next prime is 7490023. The reversal of 7489999 is 9999847.

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

It is a cyclic number.

It is not a de Polignac number, because 7489999 - 2⁷ = 7489871 is a prime.

It is a super-2 number, since 2×7489999² = 112200170040002, which contains 22 as substring.

It is a Duffinian number.

7489999 is a modest number, since divided by 9999 gives 748 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7489919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 442 + ... + 3895.

It is an arithmetic number, because the mean of its divisors is an integer number (1028106).

Almost surely, 2^7489999 is an apocalyptic number.

7489999 is a deficient number, since it is larger than the sum of its proper divisors (734849).

7489999 is a wasteful number, since it uses less digits than its factorization.

7489999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4505.

The product of its digits is 1469664, while the sum is 55.

The square root of 7489999 is about 2736.7862539848. The cubic root of 7489999 is about 195.6563375983.

The spelling of 7489999 in words is "seven million, four hundred eighty-nine thousand, nine hundred ninety-nine".