1439179990 has 8 divisors (see below), whose sum is σ = 2590524000. Its totient is φ = 575671992.

The previous prime is 1439179949. The next prime is 1439179993. The reversal of 1439179990 is 999719341.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1439179993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71958990 + ... + 71959009.

It is an arithmetic number, because the mean of its divisors is an integer number (323815500).

Almost surely, 2^1439179990 is an apocalyptic number.

1439179990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1439179990 is a deficient number, since it is larger than the sum of its proper divisors (1151344010).

1439179990 is a wasteful number, since it uses less digits than its factorization.

1439179990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143918006.

The product of its (nonzero) digits is 551124, while the sum is 52.

The square root of 1439179990 is about 37936.5258029778. The cubic root of 1439179990 is about 1129.0288442477.

The spelling of 1439179990 in words is "one billion, four hundred thirty-nine million, one hundred seventy-nine thousand, nine hundred ninety".