77148349 has 4 divisors (see below), whose sum is σ = 77242464. Its totient is φ = 77054236.

The previous prime is 77148311. The next prime is 77148353. The reversal of 77148349 is 94384177.

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, and also an emirpimes, since its reverse is a distinct semiprime: 94384177 = 1033 ⋅91369.

It is a cyclic number.

It is not a de Polignac number, because 77148349 - 2⁷ = 77148221 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 (77143349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45817 + ... + 47470.

It is an arithmetic number, because the mean of its divisors is an integer number (19310616).

Almost surely, 2^77148349 is an apocalyptic number.

It is an amenable number.

77148349 is a deficient number, since it is larger than the sum of its proper divisors (94115).

77148349 is an equidigital number, since it uses as much as digits as its factorization.

77148349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94114.

The product of its digits is 169344, while the sum is 43.

The square root of 77148349 is about 8783.4132886936. The cubic root of 77148349 is about 425.7051251994.

The spelling of 77148349 in words is "seventy-seven million, one hundred forty-eight thousand, three hundred forty-nine".