400006151 has 4 divisors (see below), whose sum is σ = 405069600. Its totient is φ = 394942704.

The previous prime is 400006121. The next prime is 400006177. The reversal of 400006151 is 151600004.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400006151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400006111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2531606 + ... + 2531763.

It is an arithmetic number, because the mean of its divisors is an integer number (101267400).

Almost surely, 2^400006151 is an apocalyptic number.

400006151 is a deficient number, since it is larger than the sum of its proper divisors (5063449).

400006151 is an equidigital number, since it uses as much as digits as its factorization.

400006151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5063448.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 400006151 is about 20000.1537744088. The cubic root of 400006151 is about 736.8100764550.

Adding to 400006151 its reverse (151600004), we get a palindrome (551606155).

The spelling of 400006151 in words is "four hundred million, six thousand, one hundred fifty-one".