1401438 has 16 divisors (see below), whose sum is σ = 2825856. Its totient is φ = 463320.

The previous prime is 1401437. The next prime is 1401443. The reversal of 1401438 is 8341041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401437) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 106 + ... + 1677.

It is an arithmetic number, because the mean of its divisors is an integer number (176616).

2^1401438 is an apocalyptic number.

1401438 is an abundant number, since it is smaller than the sum of its proper divisors (1424418).

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

1401438 is a wasteful number, since it uses less digits than its factorization.

1401438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1919.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1401438 is about 1183.8234665692. The cubic root of 1401438 is about 111.9071828804.

Adding to 1401438 its reverse (8341041), we get a palindrome (9742479).

The spelling of 1401438 in words is "one million, four hundred one thousand, four hundred thirty-eight".