7898279 has 4 divisors (see below), whose sum is σ = 8111784. Its totient is φ = 7684776.

The previous prime is 7898263. The next prime is 7898287. The reversal of 7898279 is 9728987.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9728987 = 967 ⋅10061.

It is a cyclic number.

It is not a de Polignac number, because 7898279 - 2⁴ = 7898263 is a prime.

It is a super-2 number, since 2×7898279² = 124765622323682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7898239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106697 + ... + 106770.

It is an arithmetic number, because the mean of its divisors is an integer number (2027946).

Almost surely, 2^7898279 is an apocalyptic number.

7898279 is a deficient number, since it is larger than the sum of its proper divisors (213505).

7898279 is a wasteful number, since it uses less digits than its factorization.

7898279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213504.

The product of its digits is 508032, while the sum is 50.

The square root of 7898279 is about 2810.3876956747. The cubic root of 7898279 is about 199.1487066392.

The spelling of 7898279 in words is "seven million, eight hundred ninety-eight thousand, two hundred seventy-nine".