1401330399 has 16 divisors (see below), whose sum is σ = 2136215040. Its totient is φ = 800439840.

The previous prime is 1401330377. The next prime is 1401330401. The reversal of 1401330399 is 9930331041.

It is not a de Polignac number, because 1401330399 - 2⁵ = 1401330367 is a prime.

It is a super-2 number, since 2×1401330399² = 3927453774322998402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401330599) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46657 + ... + 70565.

It is an arithmetic number, because the mean of its divisors is an integer number (133513440).

Almost surely, 2^1401330399 is an apocalyptic number.

1401330399 is a deficient number, since it is larger than the sum of its proper divisors (734884641).

1401330399 is a wasteful number, since it uses less digits than its factorization.

1401330399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26710.

The product of its (nonzero) digits is 8748, while the sum is 33.

The square root of 1401330399 is about 37434.3478506037. The cubic root of 1401330399 is about 1119.0431876674.

The spelling of 1401330399 in words is "one billion, four hundred one million, three hundred thirty thousand, three hundred ninety-nine".