7869406381 has 8 divisors (see below), whose sum is σ = 8163388800. Its totient is φ = 7580283360.

The previous prime is 7869406367. The next prime is 7869406387. The reversal of 7869406381 is 1836049687.

It is a happy number.

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

It is not a de Polignac number, because 7869406381 - 2¹³ = 7869398189 is a prime.

It is a super-2 number, since 2×7869406381² (a number of 21 digits) 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 (7869406387) 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, 1211551 + ... + 1218028.

It is an arithmetic number, because the mean of its divisors is an integer number (1020423600).

Almost surely, 2^7869406381 is an apocalyptic number.

It is an amenable number.

7869406381 is a deficient number, since it is larger than the sum of its proper divisors (293982419).

7869406381 is a wasteful number, since it uses less digits than its factorization.

7869406381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2429699.

The product of its (nonzero) digits is 1741824, while the sum is 52.

The square root of 7869406381 is about 88709.6746753137. The cubic root of 7869406381 is about 1989.0574377708.

The spelling of 7869406381 in words is "seven billion, eight hundred sixty-nine million, four hundred six thousand, three hundred eighty-one".