1390997358 has 48 divisors (see below), whose sum is σ = 3329872416. Its totient is φ = 417415680.

The previous prime is 1390997347. The next prime is 1390997359. The reversal of 1390997358 is 8537990931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390997359) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 91783 + ... + 105858.

It is an arithmetic number, because the mean of its divisors is an integer number (69372342).

Almost surely, 2^1390997358 is an apocalyptic number.

1390997358 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1390997358 is an abundant number, since it is smaller than the sum of its proper divisors (1938875058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1390997358 is a wasteful number, since it uses less digits than its factorization.

1390997358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197689 (or 197686 counting only the distinct ones).

The product of its (nonzero) digits is 1837080, while the sum is 54.

The square root of 1390997358 is about 37296.0769786850. The cubic root of 1390997358 is about 1116.2858894882.

The spelling of 1390997358 in words is "one billion, three hundred ninety million, nine hundred ninety-seven thousand, three hundred fifty-eight".