139499437 has 8 divisors (see below), whose sum is σ = 173921472. Its totient is φ = 108700800.

The previous prime is 139499413. The next prime is 139499441. The reversal of 139499437 is 734994931.

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

It is a cyclic number.

It is not a de Polignac number, because 139499437 - 2¹¹ = 139497389 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 (139499407) 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, 905764 + ... + 905917.

It is an arithmetic number, because the mean of its divisors is an integer number (21740184).

Almost surely, 2^139499437 is an apocalyptic number.

It is an amenable number.

139499437 is a deficient number, since it is larger than the sum of its proper divisors (34422035).

139499437 is a wasteful number, since it uses less digits than its factorization.

139499437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1811699.

The product of its digits is 734832, while the sum is 49.

The square root of 139499437 is about 11810.9879773032. The cubic root of 139499437 is about 518.6298210595.

The spelling of 139499437 in words is "one hundred thirty-nine million, four hundred ninety-nine thousand, four hundred thirty-seven".