77243039 has 8 divisors (see below), whose sum is σ = 81023712. Its totient is φ = 73497600.

The previous prime is 77243009. The next prime is 77243059. The reversal of 77243039 is 93034277.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77243039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77243009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4262 + ... + 13139.

It is an arithmetic number, because the mean of its divisors is an integer number (10127964).

Almost surely, 2^77243039 is an apocalyptic number.

77243039 is a deficient number, since it is larger than the sum of its proper divisors (3780673).

77243039 is a wasteful number, since it uses less digits than its factorization.

77243039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17617.

The product of its (nonzero) digits is 31752, while the sum is 35.

The square root of 77243039 is about 8788.8019092479. The cubic root of 77243039 is about 425.8792206844.

The spelling of 77243039 in words is "seventy-seven million, two hundred forty-three thousand, thirty-nine".