1401140438 has 8 divisors (see below), whose sum is σ = 2103679920. Its totient is φ = 699913800.

The previous prime is 1401140417. The next prime is 1401140467. The reversal of 1401140438 is 8340411041.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 325538 + ... + 329813.

It is an arithmetic number, because the mean of its divisors is an integer number (262959990).

Almost surely, 2^1401140438 is an apocalyptic number.

1401140438 is a deficient number, since it is larger than the sum of its proper divisors (702539482).

1401140438 is a wasteful number, since it uses less digits than its factorization.

1401140438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656422.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 1401140438 is about 37431.8105092447. The cubic root of 1401140438 is about 1118.9926204424.

Adding to 1401140438 its reverse (8340411041), we get a palindrome (9741551479).

The spelling of 1401140438 in words is "one billion, four hundred one million, one hundred forty thousand, four hundred thirty-eight".