79649 has 4 divisors (see below), whose sum is σ = 83136. Its totient is φ = 76164.

The previous prime is 79633. The next prime is 79657. The reversal of 79649 is 94697.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94697 = 281 ⋅337.

It is a cyclic number.

It is not a de Polignac number, because 79649 - 2⁴ = 79633 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (79609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1709 + ... + 1754.

It is an arithmetic number, because the mean of its divisors is an integer number (20784).

2⁷⁹⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

79649 is a deficient number, since it is larger than the sum of its proper divisors (3487).

79649 is a wasteful number, since it uses less digits than its factorization.

79649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3486.

The product of its digits is 13608, while the sum is 35.

The square root of 79649 is about 282.2215441812. The cubic root of 79649 is about 43.0255841980.

The spelling of 79649 in words is "seventy-nine thousand, six hundred forty-nine".