400021514 has 8 divisors (see below), whose sum is σ = 600500928. Its totient is φ = 199854540.

The previous prime is 400021507. The next prime is 400021547. The reversal of 400021514 is 415120004.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 400021492 and 400021501.

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, 74882 + ... + 80045.

It is an arithmetic number, because the mean of its divisors is an integer number (75062616).

Almost surely, 2^400021514 is an apocalyptic number.

400021514 is a deficient number, since it is larger than the sum of its proper divisors (200479414).

400021514 is a wasteful number, since it uses less digits than its factorization.

400021514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156220.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 400021514 is about 20000.5378427681. The cubic root of 400021514 is about 736.8195092002.

Adding to 400021514 its reverse (415120004), we get a palindrome (815141518).

The spelling of 400021514 in words is "four hundred million, twenty-one thousand, five hundred fourteen".