1390290285 has 8 divisors (see below), whose sum is σ = 2224464480. Its totient is φ = 741488144.

The previous prime is 1390290283. The next prime is 1390290301. The reversal of 1390290285 is 5820920931.

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 1390290285 - 2¹ = 1390290283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390290283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46342995 + ... + 46343024.

It is an arithmetic number, because the mean of its divisors is an integer number (278058060).

Almost surely, 2^1390290285 is an apocalyptic number.

1390290285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1390290285 is a deficient number, since it is larger than the sum of its proper divisors (834174195).

1390290285 is an equidigital number, since it uses as much as digits as its factorization.

1390290285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92686027.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 1390290285 is about 37286.5965864411. The cubic root of 1390290285 is about 1116.0967136223.

The spelling of 1390290285 in words is "one billion, three hundred ninety million, two hundred ninety thousand, two hundred eighty-five".