12779090 has 8 divisors (see below), whose sum is σ = 23002380. Its totient is φ = 5111632.

The previous prime is 12779089. The next prime is 12779093. The reversal of 12779090 is 9097721.

It can be written as a sum of positive squares in 2 ways, for example, as 11336689 + 1442401 = 3367^2 + 1201^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 12779090.

It is not an unprimeable number, because it can be changed into a prime (12779093) 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, 638945 + ... + 638964.

Almost surely, 2^12779090 is an apocalyptic number.

12779090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12779090 is a deficient number, since it is larger than the sum of its proper divisors (10223290).

12779090 is a wasteful number, since it uses less digits than its factorization.

12779090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1277916.

The product of its (nonzero) digits is 7938, while the sum is 35.

The square root of 12779090 is about 3574.7853082388. The cubic root of 12779090 is about 233.7939721102.

The spelling of 12779090 in words is "twelve million, seven hundred seventy-nine thousand, ninety".