1386436401 has 48 divisors (see below), whose sum is σ = 2352430080. Its totient is φ = 770364000.

The previous prime is 1386436397. The next prime is 1386436421. The reversal of 1386436401 is 1046346831.

It is a happy number.

1386436401 is a `hidden beast` number, since 1 + 3 + 8 + 6 + 4 + 3 + 640 + 1 = 666.

It is not a de Polignac number, because 1386436401 - 2² = 1386436397 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1386436421) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 678940 + ... + 680978.

It is an arithmetic number, because the mean of its divisors is an integer number (49008960).

Almost surely, 2^1386436401 is an apocalyptic number.

It is an amenable number.

1386436401 is a deficient number, since it is larger than the sum of its proper divisors (965993679).

1386436401 is a wasteful number, since it uses less digits than its factorization.

1386436401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2346 (or 2343 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 1386436401 is about 37234.8815091441. The cubic root of 1386436401 is about 1115.0644860718.

The spelling of 1386436401 in words is "one billion, three hundred eighty-six million, four hundred thirty-six thousand, four hundred one".