139433811 has 16 divisors (see below), whose sum is σ = 204035328. Its totient is φ = 83996000.

The previous prime is 139433809. The next prime is 139433849. The reversal of 139433811 is 118334931.

It is not a de Polignac number, because 139433811 - 2¹ = 139433809 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (139433851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7140 + ... + 18161.

It is an arithmetic number, because the mean of its divisors is an integer number (12752208).

Almost surely, 2^139433811 is an apocalyptic number.

139433811 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

139433811 is a deficient number, since it is larger than the sum of its proper divisors (64601517).

139433811 is a wasteful number, since it uses less digits than its factorization.

139433811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25482.

The product of its digits is 7776, while the sum is 33.

The square root of 139433811 is about 11808.2094747680. The cubic root of 139433811 is about 518.5484803745.

The spelling of 139433811 in words is "one hundred thirty-nine million, four hundred thirty-three thousand, eight hundred eleven".