400969488 has 80 divisors (see below), whose sum is σ = 1085930496. Its totient is φ = 127248000.

The previous prime is 400969441. The next prime is 400969507. The reversal of 400969488 is 884969004.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 276381 + ... + 277827.

Almost surely, 2^400969488 is an apocalyptic number.

400969488 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400969488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (542965248).

400969488 is an abundant number, since it is smaller than the sum of its proper divisors (684961008).

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

400969488 is a wasteful number, since it uses less digits than its factorization.

400969488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1732 (or 1726 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 48.

The square root of 400969488 is about 20024.2225317239. Note that the first 3 decimals coincide. The cubic root of 400969488 is about 737.4010901730.

The spelling of 400969488 in words is "four hundred million, nine hundred sixty-nine thousand, four hundred eighty-eight".