1390968 has 24 divisors (see below), whose sum is σ = 3767400. Its totient is φ = 463632.

The previous prime is 1390967. The next prime is 1390969. The reversal of 1390968 is 8690931.

It is an interprime number because it is at equal distance from previous prime (1390967) and next prime (1390969).

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9588 + ... + 9731.

It is an arithmetic number, because the mean of its divisors is an integer number (156975).

2^1390968 is an apocalyptic number.

1390968 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1390968 is an abundant number, since it is smaller than the sum of its proper divisors (2376432).

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

1390968 is a wasteful number, since it uses less digits than its factorization.

1390968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19331 (or 19324 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 1390968 is about 1179.3930642496. The cubic root of 1390968 is about 111.6278036094.

The spelling of 1390968 in words is "one million, three hundred ninety thousand, nine hundred sixty-eight".