7879558 has 4 divisors (see below), whose sum is σ = 11819340. Its totient is φ = 3939778.

The previous prime is 7879541. The next prime is 7879559. The reversal of 7879558 is 8559787.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8559787 = 2389 ⋅3583.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7879559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1969888 + ... + 1969891.

It is an arithmetic number, because the mean of its divisors is an integer number (2954835).

Almost surely, 2^7879558 is an apocalyptic number.

7879558 is a deficient number, since it is larger than the sum of its proper divisors (3939782).

7879558 is a wasteful number, since it uses less digits than its factorization.

7879558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3939781.

The product of its digits is 705600, while the sum is 49.

The square root of 7879558 is about 2807.0550404294. The cubic root of 7879558 is about 198.9912372092.

The spelling of 7879558 in words is "seven million, eight hundred seventy-nine thousand, five hundred fifty-eight".