1384406890 has 8 divisors (see below), whose sum is σ = 2491932420. Its totient is φ = 553762752.

The previous prime is 1384406879. The next prime is 1384406923. The reversal of 1384406890 is 986044831.

It can be written as a sum of positive squares in 2 ways, for example, as 1296216009 + 88190881 = 36003^2 + 9391^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69220335 + ... + 69220354.

Almost surely, 2^1384406890 is an apocalyptic number.

1384406890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1384406890 is a deficient number, since it is larger than the sum of its proper divisors (1107525530).

1384406890 is a wasteful number, since it uses less digits than its factorization.

1384406890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138440696.

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 1384406890 is about 37207.6187090762. The cubic root of 1384406890 is about 1114.5201310686.

The spelling of 1384406890 in words is "one billion, three hundred eighty-four million, four hundred six thousand, eight hundred ninety".