7799421 has 16 divisors (see below), whose sum is σ = 12054528. Its totient is φ = 4393200.

The previous prime is 7799417. The next prime is 7799423. The reversal of 7799421 is 1249977.

It is not a de Polignac number, because 7799421 - 2² = 7799417 is a prime.

It is a super-3 number, since 3×7799421³ (a number of 22 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7799421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7799423) 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 15 ways as a sum of consecutive naturals, for example, 1125 + ... + 4106.

It is an arithmetic number, because the mean of its divisors is an integer number (753408).

Almost surely, 2^7799421 is an apocalyptic number.

7799421 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

7799421 is a deficient number, since it is larger than the sum of its proper divisors (4255107).

7799421 is a wasteful number, since it uses less digits than its factorization.

7799421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5312.

The product of its digits is 31752, while the sum is 39.

The square root of 7799421 is about 2792.7443492021. The cubic root of 7799421 is about 198.3143410165.

The spelling of 7799421 in words is "seven million, seven hundred ninety-nine thousand, four hundred twenty-one".