12477399 has 24 divisors (see below), whose sum is σ = 18800880. Its totient is φ = 7349760.

The previous prime is 12477397. The next prime is 12477403. The reversal of 12477399 is 99377421.

It is not a de Polignac number, because 12477399 - 2¹ = 12477397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12477399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12477391) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12967 + ... + 13895.

It is an arithmetic number, because the mean of its divisors is an integer number (783370).

Almost surely, 2^12477399 is an apocalyptic number.

12477399 is a deficient number, since it is larger than the sum of its proper divisors (6323481).

12477399 is a wasteful number, since it uses less digits than its factorization.

12477399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991 (or 980 counting only the distinct ones).

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

The square root of 12477399 is about 3532.3361957775. The cubic root of 12477399 is about 231.9394845632.

It can be divided in two parts, 1247 and 7399, that added together give a triangular number (8646 = T₁₃₁).

The spelling of 12477399 in words is "twelve million, four hundred seventy-seven thousand, three hundred ninety-nine".