840400376 has 32 divisors (see below), whose sum is σ = 1589952000. Its totient is φ = 416430720.

The previous prime is 840400369. The next prime is 840400403. The reversal of 840400376 is 673004048.

840400376 = T₂₆₉ + T₂₇₀ + ... + T₁₇₁₆.

It is a happy number.

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, 504521 + ... + 506183.

It is an arithmetic number, because the mean of its divisors is an integer number (49686000).

Almost surely, 2^840400376 is an apocalyptic number.

It is an amenable number.

840400376 is a deficient number, since it is larger than the sum of its proper divisors (749551624).

840400376 is a wasteful number, since it uses less digits than its factorization.

840400376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2199 (or 2195 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 840400376 is about 28989.6598117329. The cubic root of 840400376 is about 943.6886810970.

The spelling of 840400376 in words is "eight hundred forty million, four hundred thousand, three hundred seventy-six".