77155349 has 4 divisors (see below), whose sum is σ = 77259936. Its totient is φ = 77050764.

The previous prime is 77155339. The next prime is 77155361. The reversal of 77155349 is 94355177.

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 77155349 - 2⁸ = 77155093 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 (77155339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51179 + ... + 52664.

It is an arithmetic number, because the mean of its divisors is an integer number (19314984).

Almost surely, 2^77155349 is an apocalyptic number.

It is an amenable number.

77155349 is a deficient number, since it is larger than the sum of its proper divisors (104587).

77155349 is a wasteful number, since it uses less digits than its factorization.

77155349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104586.

The product of its digits is 132300, while the sum is 41.

The square root of 77155349 is about 8783.8117580012. The cubic root of 77155349 is about 425.7180001596.

The spelling of 77155349 in words is "seventy-seven million, one hundred fifty-five thousand, three hundred forty-nine".