1397089790 has 16 divisors (see below), whose sum is σ = 2601478080. Its totient is φ = 539565600.

The previous prime is 1397089747. The next prime is 1397089807. The reversal of 1397089790 is 979807931.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2408486 + ... + 2409065.

It is an arithmetic number, because the mean of its divisors is an integer number (162592380).

Almost surely, 2^1397089790 is an apocalyptic number.

1397089790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1397089790 is a deficient number, since it is larger than the sum of its proper divisors (1204388290).

1397089790 is a wasteful number, since it uses less digits than its factorization.

1397089790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4817587.

The product of its (nonzero) digits is 857304, while the sum is 53.

The square root of 1397089790 is about 37377.6643197512. The cubic root of 1397089790 is about 1117.9132567964.

The spelling of 1397089790 in words is "one billion, three hundred ninety-seven million, eighty-nine thousand, seven hundred ninety".