1401550438 has 8 divisors (see below), whose sum is σ = 2103282288. Its totient is φ = 700456344.

The previous prime is 1401550427. The next prime is 1401550439. The reversal of 1401550438 is 8340551041.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401550439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153906 + ... + 162757.

It is an arithmetic number, because the mean of its divisors is an integer number (262910286).

Almost surely, 2^1401550438 is an apocalyptic number.

1401550438 is a deficient number, since it is larger than the sum of its proper divisors (701731850).

1401550438 is a wasteful number, since it uses less digits than its factorization.

1401550438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318878.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 1401550438 is about 37437.2867339502. The cubic root of 1401550438 is about 1119.1017558817.

The spelling of 1401550438 in words is "one billion, four hundred one million, five hundred fifty thousand, four hundred thirty-eight".