940291381 has 2 divisors, whose sum is σ = 940291382. Its totient is φ = 940291380.

The previous prime is 940291367. The next prime is 940291433. The reversal of 940291381 is 183192049.

940291381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 842973156 + 97318225 = 29034^2 + 9865^2 .

It is a cyclic number.

It is not a de Polignac number, because 940291381 - 2¹¹ = 940289333 is a prime.

It is a super-2 number, since 2×940291381² = 1768295762365774322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 940291381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (940291351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 470145690 + 470145691.

It is an arithmetic number, because the mean of its divisors is an integer number (470145691).

Almost surely, 2^940291381 is an apocalyptic number.

It is an amenable number.

940291381 is a deficient number, since it is larger than the sum of its proper divisors (1).

940291381 is an equidigital number, since it uses as much as digits as its factorization.

940291381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 940291381 is about 30664.1709654770. The cubic root of 940291381 is about 979.6873155568.

The spelling of 940291381 in words is "nine hundred forty million, two hundred ninety-one thousand, three hundred eighty-one".