400420654 has 8 divisors (see below), whose sum is σ = 600868008. Its totient is φ = 200131320.

The previous prime is 400420627. The next prime is 400420679. The reversal of 400420654 is 456024004.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32952 + ... + 43435.

It is an arithmetic number, because the mean of its divisors is an integer number (75108501).

Almost surely, 2^400420654 is an apocalyptic number.

400420654 is a deficient number, since it is larger than the sum of its proper divisors (200447354).

400420654 is a wasteful number, since it uses less digits than its factorization.

400420654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79010.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 400420654 is about 20010.5135866124. The cubic root of 400420654 is about 737.0644930052.

Adding to 400420654 its reverse (456024004), we get a palindrome (856444658).

The spelling of 400420654 in words is "four hundred million, four hundred twenty thousand, six hundred fifty-four".