400403541 has 8 divisors (see below), whose sum is σ = 535857120. Its totient is φ = 265942832.

The previous prime is 400403519. The next prime is 400403557. The reversal of 400403541 is 145304004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 400403541 - 2⁶ = 400403477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400407541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247275 + ... + 248888.

It is an arithmetic number, because the mean of its divisors is an integer number (66982140).

Almost surely, 2^400403541 is an apocalyptic number.

It is an amenable number.

400403541 is a deficient number, since it is larger than the sum of its proper divisors (135453579).

400403541 is a wasteful number, since it uses less digits than its factorization.

400403541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496435.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 400403541 is about 20010.0859818243. The cubic root of 400403541 is about 737.0539927440.

Adding to 400403541 its reverse (145304004), we get a palindrome (545707545).

The spelling of 400403541 in words is "four hundred million, four hundred three thousand, five hundred forty-one".