1401297436 has 72 divisors (see below), whose sum is σ = 3112454016. Its totient is φ = 536295840.

The previous prime is 1401297431. The next prime is 1401297439. The reversal of 1401297436 is 6347921041.

It is a junction number, because it is equal to n+sod(n) for n = 1401297395 and 1401297404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401297431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1071495 + ... + 1072801.

It is an arithmetic number, because the mean of its divisors is an integer number (43228528).

Almost surely, 2^1401297436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1401297436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1556227008).

1401297436 is an abundant number, since it is smaller than the sum of its proper divisors (1711156580).

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

1401297436 is a wasteful number, since it uses less digits than its factorization.

1401297436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1447 (or 1386 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 1401297436 is about 37433.9075705436. The cubic root of 1401297436 is about 1119.0344133128.

The spelling of 1401297436 in words is "one billion, four hundred one million, two hundred ninety-seven thousand, four hundred thirty-six".