77347349 has 4 divisors (see below), whose sum is σ = 77470560. Its totient is φ = 77224140.

The previous prime is 77347343. The next prime is 77347351. The reversal of 77347349 is 94374377.

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 a de Polignac number, because none of the positive numbers 2^k-77347349 is a prime.

It is a super-2 number, since 2×77347349² = 11965224794655602, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77347343) 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, 60659 + ... + 61920.

It is an arithmetic number, because the mean of its divisors is an integer number (19367640).

Almost surely, 2^77347349 is an apocalyptic number.

It is an amenable number.

77347349 is a deficient number, since it is larger than the sum of its proper divisors (123211).

77347349 is a wasteful number, since it uses less digits than its factorization.

77347349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123210.

The product of its digits is 444528, while the sum is 44.

The square root of 77347349 is about 8794.7341631228. The cubic root of 77347349 is about 426.0708387270.

The spelling of 77347349 in words is "seventy-seven million, three hundred forty-seven thousand, three hundred forty-nine".