1400436431397 has 24 divisors (see below), whose sum is σ = 2078138649600. Its totient is φ = 908122583520.

The previous prime is 1400436431389. The next prime is 1400436431447. The reversal of 1400436431397 is 7931346340041.

1400436431397 is a `hidden beast` number, since 1 + 40 + 0 + 436 + 43 + 139 + 7 = 666.

It is not a de Polignac number, because 1400436431397 - 2³ = 1400436431389 is a prime.

It is a super-2 number, since 2×1400436431397² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400436431327) 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 23 ways as a sum of consecutive naturals, for example, 509104 + ... + 1749302.

It is an arithmetic number, because the mean of its divisors is an integer number (86589110400).

Almost surely, 2^{1400436431397} is an apocalyptic number.

It is an amenable number.

1400436431397 is a deficient number, since it is larger than the sum of its proper divisors (677702218203).

1400436431397 is a wasteful number, since it uses less digits than its factorization.

1400436431397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243633 (or 1243630 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 45.

The spelling of 1400436431397 in words is "one trillion, four hundred billion, four hundred thirty-six million, four hundred thirty-one thousand, three hundred ninety-seven".