1489972390 has 64 divisors (see below), whose sum is σ = 2809416960. Its totient is φ = 568488960.

The previous prime is 1489972369. The next prime is 1489972391. The reversal of 1489972390 is 932799841.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1489972391) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5085084 + ... + 5085376.

It is an arithmetic number, because the mean of its divisors is an integer number (43897140).

Almost surely, 2^1489972390 is an apocalyptic number.

1489972390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1489972390 is a deficient number, since it is larger than the sum of its proper divisors (1319444570).

1489972390 is a wasteful number, since it uses less digits than its factorization.

1489972390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577.

The product of its (nonzero) digits is 979776, while the sum is 52.

The square root of 1489972390 is about 38600.1604918943. The cubic root of 1489972390 is about 1142.1577042942.

The spelling of 1489972390 in words is "one billion, four hundred eighty-nine million, nine hundred seventy-two thousand, three hundred ninety".