1390376390 has 32 divisors (see below), whose sum is σ = 2699053056. Its totient is φ = 512634240.

The previous prime is 1390376389. The next prime is 1390376413. The reversal of 1390376390 is 936730931.

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 15 ways as a sum of consecutive naturals, for example, 87995 + ... + 102585.

It is an arithmetic number, because the mean of its divisors is an integer number (84345408).

Almost surely, 2^1390376390 is an apocalyptic number.

1390376390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1390376390 is a deficient number, since it is larger than the sum of its proper divisors (1308676666).

1390376390 is a wasteful number, since it uses less digits than its factorization.

1390376390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15344.

The product of its (nonzero) digits is 91854, while the sum is 41.

The square root of 1390376390 is about 37287.7512059926. The cubic root of 1390376390 is about 1116.1197542598.

The spelling of 1390376390 in words is "one billion, three hundred ninety million, three hundred seventy-six thousand, three hundred ninety".