940641213 has 4 divisors (see below), whose sum is σ = 1254188288. Its totient is φ = 627094140.

The previous prime is 940641199. The next prime is 940641287. The reversal of 940641213 is 312146049.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 940641213 - 2⁴ = 940641197 is a prime.

It is a super-2 number, since 2×940641213² = 1769611783188222738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (940641293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156773533 + ... + 156773538.

It is an arithmetic number, because the mean of its divisors is an integer number (313547072).

Almost surely, 2^940641213 is an apocalyptic number.

It is an amenable number.

940641213 is a deficient number, since it is larger than the sum of its proper divisors (313547075).

940641213 is a wasteful number, since it uses less digits than its factorization.

940641213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313547074.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 940641213 is about 30669.8746818437. The cubic root of 940641213 is about 979.8087968640.

The spelling of 940641213 in words is "nine hundred forty million, six hundred forty-one thousand, two hundred thirteen".