400416494 has 4 divisors (see below), whose sum is σ = 600624744. Its totient is φ = 200208246.

The previous prime is 400416493. The next prime is 400416563. The reversal of 400416494 is 494614004.

It is a semiprime because it is the product of two primes.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 400416494.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400416493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100104122 + ... + 100104125.

It is an arithmetic number, because the mean of its divisors is an integer number (150156186).

Almost surely, 2^400416494 is an apocalyptic number.

400416494 is a deficient number, since it is larger than the sum of its proper divisors (200208250).

400416494 is a wasteful number, since it uses less digits than its factorization.

400416494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200208249.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 400416494 is about 20010.4096409844. The cubic root of 400416494 is about 737.0619405237.

The spelling of 400416494 in words is "four hundred million, four hundred sixteen thousand, four hundred ninety-four".