139226901 has 8 divisors (see below), whose sum is σ = 202511904. Its totient is φ = 84379920.

The previous prime is 139226887. The next prime is 139226911. The reversal of 139226901 is 109622931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 139226901 - 2⁶ = 139226837 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 4218997 = 139226901 / (1 + 3 + 9 + 2 + 2 + 6 + 9 + 0 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139226911) 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 7 ways as a sum of consecutive naturals, for example, 2109466 + ... + 2109531.

It is an arithmetic number, because the mean of its divisors is an integer number (25313988).

Almost surely, 2^139226901 is an apocalyptic number.

139226901 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

139226901 is a deficient number, since it is larger than the sum of its proper divisors (63285003).

139226901 is a wasteful number, since it uses less digits than its factorization.

139226901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4219011.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 139226901 is about 11799.4449445726. Note that the first 3 decimals coincide. The cubic root of 139226901 is about 518.2918568655.

The spelling of 139226901 in words is "one hundred thirty-nine million, two hundred twenty-six thousand, nine hundred one".