1403423550 has 96 divisors (see below), whose sum is σ = 3893724000. Its totient is φ = 371681280.

The previous prime is 1403423531. The next prime is 1403423561. The reversal of 1403423550 is 553243041.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 197662 + ... + 204638.

It is an arithmetic number, because the mean of its divisors is an integer number (40559625).

Almost surely, 2^1403423550 is an apocalyptic number.

1403423550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1403423550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1946862000).

1403423550 is an abundant number, since it is smaller than the sum of its proper divisors (2490300450).

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

1403423550 is a wasteful number, since it uses less digits than its factorization.

1403423550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7147 (or 7136 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 1403423550 is about 37462.2950444844. The cubic root of 1403423550 is about 1119.6000777724.

Adding to 1403423550 its reverse (553243041), we get a palindrome (1956666591).

The spelling of 1403423550 in words is "one billion, four hundred three million, four hundred twenty-three thousand, five hundred fifty".