7849889487 has 12 divisors (see below), whose sum is σ = 12369522984. Its totient is φ = 4757508720.

The previous prime is 7849889483. The next prime is 7849889491.

7849889487 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (7849889483) and next prime (7849889491).

It is not a de Polignac number, because 7849889487 - 2² = 7849889483 is a prime.

It is a super-2 number, since 2×7849889487² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7849889483) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39645808 + ... + 39646005.

It is an arithmetic number, because the mean of its divisors is an integer number (1030793582).

Almost surely, 2^7849889487 is an apocalyptic number.

7849889487 is a deficient number, since it is larger than the sum of its proper divisors (4519633497).

7849889487 is a wasteful number, since it uses less digits than its factorization.

7849889487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79291830 (or 79291827 counting only the distinct ones).

The product of its digits is 260112384, while the sum is 72.

The square root of 7849889487 is about 88599.6020702125. The cubic root of 7849889487 is about 1987.4117244761.

The spelling of 7849889487 in words is "seven billion, eight hundred forty-nine million, eight hundred eighty-nine thousand, four hundred eighty-seven".