3975431405 has 12 divisors (see below), whose sum is σ = 5243627676. Its totient is φ = 2891222400.

The previous prime is 3975431401. The next prime is 3975431437. The reversal of 3975431405 is 5041345793.

It can be written as a sum of positive squares in 2 ways, for example, as 2413363876 + 1562067529 = 49126^2 + 39523^2 .

It is not a de Polignac number, because 3975431405 - 2² = 3975431401 is a prime.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3975431401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3284876 + ... + 3286085.

It is an arithmetic number, because the mean of its divisors is an integer number (436968973).

Almost surely, 2^3975431405 is an apocalyptic number.

It is an amenable number.

3975431405 is a deficient number, since it is larger than the sum of its proper divisors (1268196271).

3975431405 is a wasteful number, since it uses less digits than its factorization.

3975431405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6570988 (or 6570977 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 41.

The square root of 3975431405 is about 63051.0222359638. The cubic root of 3975431405 is about 1584.1443573426.

The spelling of 3975431405 in words is "three billion, nine hundred seventy-five million, four hundred thirty-one thousand, four hundred five".