139450737 has 4 divisors (see below), whose sum is σ = 185934320. Its totient is φ = 92967156.

The previous prime is 139450723. The next prime is 139450783. The reversal of 139450737 is 737054931.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 139450737 - 2⁶ = 139450673 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139450695 and 139450704.

It is not an unprimeable number, because it can be changed into a prime (139450037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23241787 + ... + 23241792.

It is an arithmetic number, because the mean of its divisors is an integer number (46483580).

Almost surely, 2^139450737 is an apocalyptic number.

It is an amenable number.

139450737 is a deficient number, since it is larger than the sum of its proper divisors (46483583).

139450737 is an equidigital number, since it uses as much as digits as its factorization.

139450737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46483582.

The product of its (nonzero) digits is 79380, while the sum is 39.

The square root of 139450737 is about 11808.9261577842. The cubic root of 139450737 is about 518.5694618864.

The spelling of 139450737 in words is "one hundred thirty-nine million, four hundred fifty thousand, seven hundred thirty-seven".