1390376 has 32 divisors (see below), whose sum is σ = 2910600. Its totient is φ = 618240.

The previous prime is 1390369. The next prime is 1390387. The reversal of 1390376 is 6730931.

It can be written as a sum of positive squares in 4 ways, for example, as 857476 + 532900 = 926^2 + 730^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2786 + ... + 3246.

2^1390376 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1390376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1455300).

1390376 is an abundant number, since it is smaller than the sum of its proper divisors (1520224).

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

1390376 is a wasteful number, since it uses less digits than its factorization.

1390376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509 (or 505 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 29.

The square root of 1390376 is about 1179.1420609918. The cubic root of 1390376 is about 111.6119649903.

The spelling of 1390376 in words is "one million, three hundred ninety thousand, three hundred seventy-six".