1394431 has 2 divisors, whose sum is σ = 1394432. Its totient is φ = 1394430.

The previous prime is 1394423. The next prime is 1394441. The reversal of 1394431 is 1344931.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1394431 - 2³ = 1394423 is a prime.

It is a super-2 number, since 2×1394431² = 3888875627522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1394396 and 1394405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1394401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 697215 + 697216.

It is an arithmetic number, because the mean of its divisors is an integer number (697216).

2^1394431 is an apocalyptic number.

1394431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1394431 is an equidigital number, since it uses as much as digits as its factorization.

1394431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 25.

The square root of 1394431 is about 1180.8602796267. The cubic root of 1394431 is about 111.7203642634.

The spelling of 1394431 in words is "one million, three hundred ninety-four thousand, four hundred thirty-one".