77093897 has 4 divisors (see below), whose sum is σ = 77401296. Its totient is φ = 76786500.

The previous prime is 77093881. The next prime is 77093921. The reversal of 77093897 is 79839077.

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 77093897 - 2⁴ = 77093881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77093857) 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, 153323 + ... + 153824.

It is an arithmetic number, because the mean of its divisors is an integer number (19350324).

Almost surely, 2^77093897 is an apocalyptic number.

It is an amenable number.

77093897 is a deficient number, since it is larger than the sum of its proper divisors (307399).

77093897 is a wasteful number, since it uses less digits than its factorization.

77093897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307398.

The product of its (nonzero) digits is 666792, while the sum is 50.

The square root of 77093897 is about 8780.3130354219. The cubic root of 77093897 is about 425.6049461220.

The spelling of 77093897 in words is "seventy-seven million, ninety-three thousand, eight hundred ninety-seven".