12434877397 has 8 divisors (see below), whose sum is σ = 12521223000. Its totient is φ = 12348570624.

The previous prime is 12434877391. The next prime is 12434877457. The reversal of 12434877397 is 79377843421.

It can be written as a sum of positive squares in 4 ways, for example, as 1055535121 + 11379342276 = 32489^2 + 106674^2 .

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 12434877397 - 2¹⁵ = 12434844629 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 (12434877391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 973629 + ... + 986317.

It is an arithmetic number, because the mean of its divisors is an integer number (1565152875).

Almost surely, 2^12434877397 is an apocalyptic number.

It is an amenable number.

12434877397 is a deficient number, since it is larger than the sum of its proper divisors (86345603).

12434877397 is a wasteful number, since it uses less digits than its factorization.

12434877397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19415.

The product of its digits is 7112448, while the sum is 55.

The spelling of 12434877397 in words is "twelve billion, four hundred thirty-four million, eight hundred seventy-seven thousand, three hundred ninety-seven".