1401839 has 8 divisors (see below), whose sum is σ = 1494000. Its totient is φ = 1311552.

The previous prime is 1401823. The next prime is 1401857. The reversal of 1401839 is 9381041.

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

It is a cyclic number.

It is not a de Polignac number, because 1401839 - 2⁴ = 1401823 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1277 + ... + 2105.

It is an arithmetic number, because the mean of its divisors is an integer number (186750).

2^1401839 is an apocalyptic number.

1401839 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1401839 is a deficient number, since it is larger than the sum of its proper divisors (92161).

1401839 is an equidigital number, since it uses as much as digits as its factorization.

1401839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 937.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1401839 is about 1183.9928209242. The cubic root of 1401839 is about 111.9178553708.

The spelling of 1401839 in words is "one million, four hundred one thousand, eight hundred thirty-nine".