7428999 has 4 divisors (see below), whose sum is σ = 9905336. Its totient is φ = 4952664.

The previous prime is 7428997. The next prime is 7429001. The reversal of 7428999 is 9998247.

It is a happy number.

7428999 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.

It is an interprime number because it is at equal distance from previous prime (7428997) and next prime (7429001).

It is not a de Polignac number, because 7428999 - 2¹ = 7428997 is a prime.

It is a super-2 number, since 2×7428999² = 110380052284002, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7428997) 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 3 ways as a sum of consecutive naturals, for example, 1238164 + ... + 1238169.

It is an arithmetic number, because the mean of its divisors is an integer number (2476334).

Almost surely, 2^7428999 is an apocalyptic number.

7428999 is a deficient number, since it is larger than the sum of its proper divisors (2476337).

7428999 is a wasteful number, since it uses less digits than its factorization.

7428999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2476336.

The product of its digits is 326592, while the sum is 48.

The square root of 7428999 is about 2725.6190122613. The cubic root of 7428999 is about 195.1237347498.

The spelling of 7428999 in words is "seven million, four hundred twenty-eight thousand, nine hundred ninety-nine".