1390434 has 32 divisors (see below), whose sum is σ = 2946240. Its totient is φ = 436800.

The previous prime is 1390421. The next prime is 1390457. The reversal of 1390434 is 4340931.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 10549 + ... + 10679.

It is an arithmetic number, because the mean of its divisors is an integer number (92070).

2^1390434 is an apocalyptic number.

1390434 is an abundant number, since it is smaller than the sum of its proper divisors (1555806).

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

1390434 is a wasteful number, since it uses less digits than its factorization.

1390434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 1390434 is about 1179.1666548881. The cubic root of 1390434 is about 111.6135169455.

The spelling of 1390434 in words is "one million, three hundred ninety thousand, four hundred thirty-four".