4012912639 has 8 divisors (see below), whose sum is σ = 4046601888. Its totient is φ = 3979338720.

The previous prime is 4012912567. The next prime is 4012912721. The reversal of 4012912639 is 9362192104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4012912639 - 2¹³ = 4012904447 is a prime.

It is a super-2 number, since 2×4012912639² = 32206935696491888642, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4012912598 and 4012912607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4012912139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41769 + ... + 98845.

It is an arithmetic number, because the mean of its divisors is an integer number (505825236).

Almost surely, 2^4012912639 is an apocalyptic number.

4012912639 is a deficient number, since it is larger than the sum of its proper divisors (33689249).

4012912639 is a wasteful number, since it uses less digits than its factorization.

4012912639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57665.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 4012912639 is about 63347.5543253250. The cubic root of 4012912639 is about 1589.1073452818.

The spelling of 4012912639 in words is "four billion, twelve million, nine hundred twelve thousand, six hundred thirty-nine".