400829156 has 24 divisors (see below), whose sum is σ = 863325120. Its totient is φ = 158569632.

The previous prime is 400829153. The next prime is 400829159. The reversal of 400829156 is 651928004.

It is an interprime number because it is at equal distance from previous prime (400829153) and next prime (400829159).

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (400829153) 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, 550226 + ... + 550953.

It is an arithmetic number, because the mean of its divisors is an integer number (35971880).

Almost surely, 2^400829156 is an apocalyptic number.

It is an amenable number.

400829156 is an abundant number, since it is smaller than the sum of its proper divisors (462495964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400829156 is a wasteful number, since it uses less digits than its factorization.

400829156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1101203 (or 1101201 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 400829156 is about 20020.7181689369. The cubic root of 400829156 is about 737.3150544958.

The spelling of 400829156 in words is "four hundred million, eight hundred twenty-nine thousand, one hundred fifty-six".