400290484 has 24 divisors (see below), whose sum is σ = 766973088. Its totient is φ = 181287840.

The previous prime is 400290481. The next prime is 400290487. The reversal of 400290484 is 484092004.

It is an interprime number because it is at equal distance from previous prime (400290481) and next prime (400290487).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400290481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4234 + ... + 28609.

It is an arithmetic number, because the mean of its divisors is an integer number (31957212).

Almost surely, 2^400290484 is an apocalyptic number.

400290484 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

400290484 is a deficient number, since it is larger than the sum of its proper divisors (366682604).

400290484 is a wasteful number, since it uses less digits than its factorization.

400290484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33135 (or 33133 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 400290484 is about 20007.2607820261. The cubic root of 400290484 is about 736.9846152712.

The spelling of 400290484 in words is "four hundred million, two hundred ninety thousand, four hundred eighty-four".