400070 has 16 divisors (see below), whose sum is σ = 785808. Its totient is φ = 145440.

The previous prime is 400069. The next prime is 400087. The reversal of 400070 is 70004.

It is a Harshad number since it is a multiple of its sum of digits (11).

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, 1709 + ... + 1928.

It is an arithmetic number, because the mean of its divisors is an integer number (49113).

2⁴⁰⁰⁰⁷⁰ is an apocalyptic number.

400070 is a deficient number, since it is larger than the sum of its proper divisors (385738).

400070 is a wasteful number, since it uses less digits than its factorization.

400070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3655.

The product of its (nonzero) digits is 28, while the sum is 11.

The square root of 400070 is about 632.5108694718. The cubic root of 400070 is about 73.6849277589.

Adding to 400070 its reverse (70004), we get a palindrome (470074).

The spelling of 400070 in words is "four hundred thousand, seventy", and thus it is an iban number.