400461543 has 16 divisors (see below), whose sum is σ = 593660640. Its totient is φ = 266801472.

The previous prime is 400461539. The next prime is 400461547. The reversal of 400461543 is 345164004.

400461543 is a `hidden beast` number, since 4 + 0 + 0 + 4 + 615 + 43 = 666.

It is an interprime number because it is at equal distance from previous prime (400461539) and next prime (400461547).

It is not a de Polignac number, because 400461543 - 2² = 400461539 is a prime.

It is a super-3 number, since 3×400461543³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400461547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48355 + ... + 56027.

It is an arithmetic number, because the mean of its divisors is an integer number (37103790).

Almost surely, 2^400461543 is an apocalyptic number.

400461543 is a deficient number, since it is larger than the sum of its proper divisors (193199097).

400461543 is a wasteful number, since it uses less digits than its factorization.

400461543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9615 (or 9609 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 400461543 is about 20011.5352484511. The cubic root of 400461543 is about 737.0895806257.

The spelling of 400461543 in words is "four hundred million, four hundred sixty-one thousand, five hundred forty-three".