77959039 has 4 divisors (see below), whose sum is σ = 78649056. Its totient is φ = 77269024.

The previous prime is 77959019. The next prime is 77959051. The reversal of 77959039 is 93095977.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93095977 = 13 ⋅7161229.

It is a cyclic number.

It is not a de Polignac number, because 77959039 - 2¹⁹ = 77434751 is a prime.

It is a super-2 number, since 2×77959039² = 12155223523607042, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77958983 and 77959001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77959009) 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 in 3 ways as a sum of consecutive naturals, for example, 344839 + ... + 345064.

It is an arithmetic number, because the mean of its divisors is an integer number (19662264).

Almost surely, 2^77959039 is an apocalyptic number.

77959039 is a deficient number, since it is larger than the sum of its proper divisors (690017).

77959039 is a wasteful number, since it uses less digits than its factorization.

77959039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690016.

The product of its (nonzero) digits is 535815, while the sum is 49.

The square root of 77959039 is about 8829.4416018228. The cubic root of 77959039 is about 427.1910634618.

The spelling of 77959039 in words is "seventy-seven million, nine hundred fifty-nine thousand, thirty-nine".