77049069 has 8 divisors (see below), whose sum is σ = 103057440. Its totient is φ = 51203376.

The previous prime is 77049067. The next prime is 77049073. The reversal of 77049069 is 96094077.

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

It is not a de Polignac number, because 77049069 - 2¹ = 77049067 is a prime.

It is a super-2 number, since 2×77049069² = 11873118067533522, 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 77049069.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77049061) 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, 39559 + ... + 41460.

It is an arithmetic number, because the mean of its divisors is an integer number (12882180).

Almost surely, 2^77049069 is an apocalyptic number.

It is an amenable number.

77049069 is a deficient number, since it is larger than the sum of its proper divisors (26008371).

77049069 is a wasteful number, since it uses less digits than its factorization.

77049069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81339.

The product of its (nonzero) digits is 95256, while the sum is 42.

The square root of 77049069 is about 8777.7599078580. The cubic root of 77049069 is about 425.5224375688.

The spelling of 77049069 in words is "seventy-seven million, forty-nine thousand, sixty-nine".