77209348 has 6 divisors (see below), whose sum is σ = 135116366. Its totient is φ = 38604672.

The previous prime is 77209337. The next prime is 77209361. The reversal of 77209348 is 84390277.

It can be written as a sum of positive squares in only one way, i.e., 69189124 + 8020224 = 8318^2 + 2832^2 .

It is a super-2 number, since 2×77209348² = 11922566837170208, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 77209348.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 9651165 + ... + 9651172.

Almost surely, 2^77209348 is an apocalyptic number.

It is an amenable number.

77209348 is a deficient number, since it is larger than the sum of its proper divisors (57907018).

77209348 is a wasteful number, since it uses less digits than its factorization.

77209348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19302341 (or 19302339 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 77209348 is about 8786.8849998165. The cubic root of 77209348 is about 425.8172932770.

The spelling of 77209348 in words is "seventy-seven million, two hundred nine thousand, three hundred forty-eight".