139533801 has 24 divisors (see below), whose sum is σ = 212192736. Its totient is φ = 80879040.

The previous prime is 139533799. The next prime is 139533811. The reversal of 139533801 is 108335931.

It is not a de Polignac number, because 139533801 - 2¹ = 139533799 is a prime.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (139533811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13461 + ... + 21453.

It is an arithmetic number, because the mean of its divisors is an integer number (8841364).

Almost surely, 2^139533801 is an apocalyptic number.

139533801 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

139533801 is a deficient number, since it is larger than the sum of its proper divisors (72658935).

139533801 is a wasteful number, since it uses less digits than its factorization.

139533801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8053 (or 8030 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 139533801 is about 11812.4426347813. The cubic root of 139533801 is about 518.6724036255.

The spelling of 139533801 in words is "one hundred thirty-nine million, five hundred thirty-three thousand, eight hundred one".