940036400391 has 40 divisors (see below), whose sum is σ = 1410777385600. Its totient is φ = 556468632720.

The previous prime is 940036400383. The next prime is 940036400417. The reversal of 940036400391 is 193004630049.

940036400391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 940036400391 - 2³ = 940036400383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (940036402391) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1639830 + ... + 2137548.

It is an arithmetic number, because the mean of its divisors is an integer number (35269434640).

Almost surely, 2^940036400391 is an apocalyptic number.

940036400391 is a deficient number, since it is larger than the sum of its proper divisors (470740985209).

940036400391 is an equidigital number, since it uses as much as digits as its factorization.

940036400391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497809 (or 497776 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 39.

The spelling of 940036400391 in words is "nine hundred forty billion, thirty-six million, four hundred thousand, three hundred ninety-one".