7139905699 has 4 divisors (see below), whose sum is σ = 7140997864. Its totient is φ = 7138813536.

The previous prime is 7139905697. The next prime is 7139905711. The reversal of 7139905699 is 9965099317.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9965099317 = 653 ⋅15260489.

It is a cyclic number.

It is not a de Polignac number, because 7139905699 - 2¹ = 7139905697 is a prime.

It is a super-2 number, since 2×7139905699² (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 (7139905693) 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, 536217 + ... + 549370.

It is an arithmetic number, because the mean of its divisors is an integer number (1785249466).

Almost surely, 2^7139905699 is an apocalyptic number.

7139905699 is a deficient number, since it is larger than the sum of its proper divisors (1092165).

7139905699 is a wasteful number, since it uses less digits than its factorization.

7139905699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092164.

The product of its (nonzero) digits is 4133430, while the sum is 58.

The square root of 7139905699 is about 84497.9626914164. The cubic root of 7139905699 is about 1925.5914929626.

The spelling of 7139905699 in words is "seven billion, one hundred thirty-nine million, nine hundred five thousand, six hundred ninety-nine".