1390225989 has 8 divisors (see below), whose sum is σ = 1853867232. Its totient is φ = 926701040.

The previous prime is 1390225981. The next prime is 1390225997. The reversal of 1390225989 is 9895220931.

It is an interprime number because it is at equal distance from previous prime (1390225981) and next prime (1390225997).

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

It is a cyclic number.

It is not a de Polignac number, because 1390225989 - 2³ = 1390225981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390225981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4294 + ... + 52904.

It is an arithmetic number, because the mean of its divisors is an integer number (231733404).

Almost surely, 2^1390225989 is an apocalyptic number.

It is an amenable number.

1390225989 is a deficient number, since it is larger than the sum of its proper divisors (463641243).

1390225989 is an equidigital number, since it uses as much as digits as its factorization.

1390225989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58147.

The product of its (nonzero) digits is 349920, while the sum is 48.

The square root of 1390225989 is about 37285.7343899782. The cubic root of 1390225989 is about 1116.0795081841.

The spelling of 1390225989 in words is "one billion, three hundred ninety million, two hundred twenty-five thousand, nine hundred eighty-nine".