77494453 has 8 divisors (see below), whose sum is σ = 78269400. Its totient is φ = 76723200.

The previous prime is 77494421. The next prime is 77494477. The reversal of 77494453 is 35449477.

It can be written as a sum of positive squares in 4 ways, for example, as 46212804 + 31281649 = 6798^2 + 5593^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77494453 - 2⁵ = 77494421 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 (77494253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59101 + ... + 60397.

It is an arithmetic number, because the mean of its divisors is an integer number (9783675).

Almost surely, 2^77494453 is an apocalyptic number.

It is an amenable number.

77494453 is a deficient number, since it is larger than the sum of its proper divisors (774947).

77494453 is a wasteful number, since it uses less digits than its factorization.

77494453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1847.

The product of its digits is 423360, while the sum is 43.

The square root of 77494453 is about 8803.0933767625. The cubic root of 77494453 is about 426.3407770129.

The spelling of 77494453 in words is "seventy-seven million, four hundred ninety-four thousand, four hundred fifty-three".