879742154 has 4 divisors (see below), whose sum is σ = 1319613234. Its totient is φ = 439871076.

The previous prime is 879742153. The next prime is 879742181. The reversal of 879742154 is 451247978.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 860072929 + 19669225 = 29327^2 + 4435^2 .

It is a junction number, because it is equal to n+sod(n) for n = 879742099 and 879742108.

It is not an unprimeable number, because it can be changed into a prime (879742153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219935537 + ... + 219935540.

Almost surely, 2^879742154 is an apocalyptic number.

879742154 is a deficient number, since it is larger than the sum of its proper divisors (439871080).

879742154 is a wasteful number, since it uses less digits than its factorization.

879742154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439871079.

The product of its digits is 564480, while the sum is 47.

The square root of 879742154 is about 29660.4476365412. The cubic root of 879742154 is about 958.1903676907.

The spelling of 879742154 in words is "eight hundred seventy-nine million, seven hundred forty-two thousand, one hundred fifty-four".