1390974 has 32 divisors (see below), whose sum is σ = 3175200. Its totient is φ = 402432.

The previous prime is 1390969. The next prime is 1390979. The reversal of 1390974 is 4790931.

1390974 = T₃₉₆ + T₃₉₇ + ... + T₄₁₂.

It is an interprime number because it is at equal distance from previous prime (1390969) and next prime (1390979).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 802 + ... + 1850.

It is an arithmetic number, because the mean of its divisors is an integer number (99225).

2^1390974 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1390974, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1587600).

1390974 is an abundant number, since it is smaller than the sum of its proper divisors (1784226).

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

1390974 is a wasteful number, since it uses less digits than its factorization.

1390974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1084.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 1390974 is about 1179.3956079281. The cubic root of 1390974 is about 111.6279641129.

The spelling of 1390974 in words is "one million, three hundred ninety thousand, nine hundred seventy-four".