400514405 has 8 divisors (see below), whose sum is σ = 481020792. Its totient is φ = 320142528.

The previous prime is 400514399. The next prime is 400514417. The reversal of 400514405 is 504415004.

It can be written as a sum of positive squares in 4 ways, for example, as 28718881 + 371795524 = 5359^2 + 19282^2 .

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 400514405 - 2¹⁰ = 400513381 is a prime.

It is a super-2 number, since 2×400514405² = 320823577225008050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26954 + ... + 39083.

It is an arithmetic number, because the mean of its divisors is an integer number (60127599).

Almost surely, 2^400514405 is an apocalyptic number.

It is an amenable number.

400514405 is a deficient number, since it is larger than the sum of its proper divisors (80506387).

400514405 is a wasteful number, since it uses less digits than its factorization.

400514405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67255.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 400514405 is about 20012.8559930860. The cubic root of 400514405 is about 737.1220118007.

Adding to 400514405 its reverse (504415004), we get a palindrome (904929409).

The spelling of 400514405 in words is "four hundred million, five hundred fourteen thousand, four hundred five".