842979377 has 4 divisors (see below), whose sum is σ = 843984960. Its totient is φ = 841973796.

The previous prime is 842979359. The next prime is 842979407. The reversal of 842979377 is 773979248.

842979377 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 842979377 - 2⁸ = 842979121 is a prime.

It is a super-2 number, since 2×842979377² = 1421228460094616258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (842973377) 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, 501533 + ... + 503210.

It is an arithmetic number, because the mean of its divisors is an integer number (210996240).

Almost surely, 2^842979377 is an apocalyptic number.

It is an amenable number.

842979377 is a deficient number, since it is larger than the sum of its proper divisors (1005583).

842979377 is a wasteful number, since it uses less digits than its factorization.

842979377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005582.

The product of its digits is 5334336, while the sum is 56.

The square root of 842979377 is about 29034.1071328188. The cubic root of 842979377 is about 944.6530185675.

The spelling of 842979377 in words is "eight hundred forty-two million, nine hundred seventy-nine thousand, three hundred seventy-seven".