400147 has 6 divisors (see below), whose sum is σ = 439964. Its totient is φ = 363660.

The previous prime is 400123. The next prime is 400151. The reversal of 400147 is 741004.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-400147 is a prime.

It is a Duffinian number.

400147 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 400147.

It is not an unprimeable number, because it can be changed into a prime (400157) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1533 + ... + 1774.

2⁴⁰⁰¹⁴⁷ is an apocalyptic number.

400147 is a deficient number, since it is larger than the sum of its proper divisors (39817).

400147 is a wasteful number, since it uses less digits than its factorization.

400147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3329 (or 3318 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 400147 is about 632.5717350625. The cubic root of 400147 is about 73.6896547445.

The spelling of 400147 in words is "four hundred thousand, one hundred forty-seven", and thus it is an iban number.