400412015 has 8 divisors (see below), whose sum is σ = 483555840. Its totient is φ = 318288672.

The previous prime is 400412011. The next prime is 400412041. The reversal of 400412015 is 510214004.

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 400412015 - 2² = 400412011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400411984 and 400412002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400412011) 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, 254255 + ... + 255824.

It is an arithmetic number, because the mean of its divisors is an integer number (60444480).

Almost surely, 2^400412015 is an apocalyptic number.

400412015 is a deficient number, since it is larger than the sum of its proper divisors (83143825).

400412015 is a wasteful number, since it uses less digits than its factorization.

400412015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510241.

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

The square root of 400412015 is about 20010.2977239221. The cubic root of 400412015 is about 737.0591922913.

Adding to 400412015 its reverse (510214004), we get a palindrome (910626019).

The spelling of 400412015 in words is "four hundred million, four hundred twelve thousand, fifteen".