77399153 has 12 divisors (see below), whose sum is σ = 85686300. Its totient is φ = 69498432.

The previous prime is 77399143. The next prime is 77399171. The reversal of 77399153 is 35199377.

It can be written as a sum of positive squares in 6 ways, for example, as 258064 + 77141089 = 508^2 + 8783^2 .

It is not a de Polignac number, because 77399153 - 2⁸ = 77398897 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77399143) 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 11 ways as a sum of consecutive naturals, for example, 15623 + ... + 19971.

It is an arithmetic number, because the mean of its divisors is an integer number (7140525).

Almost surely, 2^77399153 is an apocalyptic number.

It is an amenable number.

77399153 is a deficient number, since it is larger than the sum of its proper divisors (8287147).

77399153 is a wasteful number, since it uses less digits than its factorization.

77399153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4436 (or 4399 counting only the distinct ones).

The product of its digits is 178605, while the sum is 44.

The square root of 77399153 is about 8797.6788416036. The cubic root of 77399153 is about 426.1659389392.

The spelling of 77399153 in words is "seventy-seven million, three hundred ninety-nine thousand, one hundred fifty-three".