1401111439 has 32 divisors (see below), whose sum is σ = 1769600000. Its totient is φ = 1102302432.

The previous prime is 1401111403. The next prime is 1401111443. The reversal of 1401111439 is 9341111041.

It is not a de Polignac number, because 1401111439 - 2⁷ = 1401111311 is a prime.

It is a super-2 number, since 2×1401111439² = 3926226528993301442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401111469) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 886552 + ... + 888130.

It is an arithmetic number, because the mean of its divisors is an integer number (55300000).

Almost surely, 2^1401111439 is an apocalyptic number.

1401111439 is a deficient number, since it is larger than the sum of its proper divisors (368488561).

1401111439 is a wasteful number, since it uses less digits than its factorization.

1401111439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1812 (or 1798 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 1401111439 is about 37431.4231495411. The cubic root of 1401111439 is about 1118.9849005665.

The spelling of 1401111439 in words is "one billion, four hundred one million, one hundred eleven thousand, four hundred thirty-nine".