400041491 has 8 divisors (see below), whose sum is σ = 408059904. Its totient is φ = 392099400.

The previous prime is 400041479. The next prime is 400041493. The reversal of 400041491 is 194140004.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400041491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400041493) 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, 8435 + ... + 29516.

It is an arithmetic number, because the mean of its divisors is an integer number (51007488).

Almost surely, 2^400041491 is an apocalyptic number.

400041491 is a deficient number, since it is larger than the sum of its proper divisors (8018413).

400041491 is a wasteful number, since it uses less digits than its factorization.

400041491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38161.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 400041491 is about 20001.0372481029. The cubic root of 400041491 is about 736.8317745391.

Adding to 400041491 its reverse (194140004), we get a palindrome (594181495).

The spelling of 400041491 in words is "four hundred million, forty-one thousand, four hundred ninety-one".