10291211939 has 4 divisors (see below), whose sum is σ = 10465639320. Its totient is φ = 10116784560.

The previous prime is 10291211923. The next prime is 10291211951. The reversal of 10291211939 is 93911219201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10291211939 - 2⁴ = 10291211923 is a prime.

It is a super-2 number, since 2×10291211939² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10291213939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87213602 + ... + 87213719.

It is an arithmetic number, because the mean of its divisors is an integer number (2616409830).

Almost surely, 2^10291211939 is an apocalyptic number.

10291211939 is a deficient number, since it is larger than the sum of its proper divisors (174427381).

10291211939 is an equidigital number, since it uses as much as digits as its factorization.

10291211939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174427380.

The product of its (nonzero) digits is 8748, while the sum is 38.

The spelling of 10291211939 in words is "ten billion, two hundred ninety-one million, two hundred eleven thousand, nine hundred thirty-nine".