139009995 has 24 divisors (see below), whose sum is σ = 242800272. Its totient is φ = 73569600.

The previous prime is 139009979. The next prime is 139010029. The reversal of 139009995 is 599900931.

139009995 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 139009995 - 2⁴ = 139009979 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 139009995.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5896 + ... + 17685.

It is an arithmetic number, because the mean of its divisors is an integer number (10116678).

Almost surely, 2^139009995 is an apocalyptic number.

139009995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

139009995 is a deficient number, since it is larger than the sum of its proper divisors (103790277).

139009995 is a wasteful number, since it uses less digits than its factorization.

139009995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23723 (or 23720 counting only the distinct ones).

The product of its (nonzero) digits is 98415, while the sum is 45.

The square root of 139009995 is about 11790.2499973495. The cubic root of 139009995 is about 518.0225625350.

The spelling of 139009995 in words is "one hundred thirty-nine million, nine thousand, nine hundred ninety-five".