12693749 has 2 divisors, whose sum is σ = 12693750. Its totient is φ = 12693748.

The previous prime is 12693743. The next prime is 12693761. The reversal of 12693749 is 94739621.

12693749 = 2056² + 2057² + 2058².

12693749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6666724 + 6027025 = 2582^2 + 2455^2 .

It is a cyclic number.

It is not a de Polignac number, because 12693749 - 2¹² = 12689653 is a prime.

It is a super-2 number, since 2×12693749² = 322262527350002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12693743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6346874 + 6346875.

It is an arithmetic number, because the mean of its divisors is an integer number (6346875).

Almost surely, 2^12693749 is an apocalyptic number.

It is an amenable number.

12693749 is a deficient number, since it is larger than the sum of its proper divisors (1).

12693749 is an equidigital number, since it uses as much as digits as its factorization.

12693749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 41.

The square root of 12693749 is about 3562.8287918450. The cubic root of 12693749 is about 233.2723702413.

The spelling of 12693749 in words is "twelve million, six hundred ninety-three thousand, seven hundred forty-nine".