139015811 has 12 divisors (see below), whose sum is σ = 157735872. Its totient is φ = 122298000.

The previous prime is 139015781. The next prime is 139015813. The reversal of 139015811 is 118510931.

It is not a de Polignac number, because 139015811 - 2¹⁰ = 139014787 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139015813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14780 + ... + 22281.

It is an arithmetic number, because the mean of its divisors is an integer number (13144656).

Almost surely, 2^139015811 is an apocalyptic number.

139015811 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

139015811 is a deficient number, since it is larger than the sum of its proper divisors (18720061).

139015811 is a wasteful number, since it uses less digits than its factorization.

139015811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37114 (or 37103 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 29.

The square root of 139015811 is about 11790.4966392430. The cubic root of 139015811 is about 518.0297869009.

The spelling of 139015811 in words is "one hundred thirty-nine million, fifteen thousand, eight hundred eleven".