400473140 has 24 divisors (see below), whose sum is σ = 846569472. Its totient is φ = 159127200.

The previous prime is 400473121. The next prime is 400473169. The reversal of 400473140 is 41374004.

It is a super-2 number, since 2×400473140² = 320757471722919200, which contains 22 as substring.

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, 63284 + ... + 69323.

It is an arithmetic number, because the mean of its divisors is an integer number (35273728).

Almost surely, 2^400473140 is an apocalyptic number.

It is an amenable number.

400473140 is an abundant number, since it is smaller than the sum of its proper divisors (446096332).

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

400473140 is a wasteful number, since it uses less digits than its factorization.

400473140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132767 (or 132765 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 400473140 is about 20011.8250042319. The cubic root of 400473140 is about 737.0966957037.

The spelling of 400473140 in words is "four hundred million, four hundred seventy-three thousand, one hundred forty".