139288995 has 12 divisors (see below), whose sum is σ = 241434336. Its totient is φ = 74287440.

The previous prime is 139288969. The next prime is 139289009. The reversal of 139288995 is 599882931.

It is not a de Polignac number, because 139288995 - 2¹³ = 139280803 is a prime.

It is a super-2 number, since 2×139288995² = 38802848256220050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1547611 + ... + 1547700.

It is an arithmetic number, because the mean of its divisors is an integer number (20119528).

Almost surely, 2^139288995 is an apocalyptic number.

139288995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

139288995 is a deficient number, since it is larger than the sum of its proper divisors (102145341).

139288995 is a wasteful number, since it uses less digits than its factorization.

139288995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3095322 (or 3095319 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 54.

The square root of 139288995 is about 11802.0758767261. The cubic root of 139288995 is about 518.3688966500.

The spelling of 139288995 in words is "one hundred thirty-nine million, two hundred eighty-eight thousand, nine hundred ninety-five".