1000409990 has 16 divisors (see below), whose sum is σ = 1858826880. Its totient is φ = 387255360.

The previous prime is 1000409981. The next prime is 1000410011. The reversal of 1000409990 is 999040001.

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, 1613255 + ... + 1613874.

It is an arithmetic number, because the mean of its divisors is an integer number (116176680).

Almost surely, 2^1000409990 is an apocalyptic number.

1000409990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1000409990 is a deficient number, since it is larger than the sum of its proper divisors (858416890).

1000409990 is a wasteful number, since it uses less digits than its factorization.

1000409990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3227167.

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 1000409990 is about 31629.2584484682. The cubic root of 1000409990 is about 1000.1366446607.

Adding to 1000409990 its reverse (999040001), we get a palindrome (1999449991).

The spelling of 1000409990 in words is "one billion, four hundred nine thousand, nine hundred ninety".