403406490 has 16 divisors (see below), whose sum is σ = 968175648. Its totient is φ = 107575056.

The previous prime is 403406431. The next prime is 403406527. The reversal of 403406490 is 94604304.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 13446883 = 403406490 / (4 + 0 + 3 + 4 + 0 + 6 + 4 + 9 + 0).

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, 6723412 + ... + 6723471.

It is an arithmetic number, because the mean of its divisors is an integer number (60510978).

Almost surely, 2^403406490 is an apocalyptic number.

403406490 is an abundant number, since it is smaller than the sum of its proper divisors (564769158).

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

403406490 is a wasteful number, since it uses less digits than its factorization.

403406490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13446893.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 403406490 is about 20084.9817027549. The cubic root of 403406490 is about 738.8919928848.

The spelling of 403406490 in words is "four hundred three million, four hundred six thousand, four hundred ninety".