1390346 has 8 divisors (see below), whose sum is σ = 2093124. Its totient is φ = 692640.

The previous prime is 1390343. The next prime is 1390357. The reversal of 1390346 is 6430931.

It can be written as a sum of positive squares in 2 ways, for example, as 1297321 + 93025 = 1139^2 + 305^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1390343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 485 + ... + 1736.

2^1390346 is an apocalyptic number.

1390346 is a deficient number, since it is larger than the sum of its proper divisors (702778).

1390346 is a wasteful number, since it uses less digits than its factorization.

1390346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2536.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 1390346 is about 1179.1293398097. The cubic root of 1390346 is about 111.6111622379.

The spelling of 1390346 in words is "one million, three hundred ninety thousand, three hundred forty-six".