139497326 has 16 divisors (see below), whose sum is σ = 216288096. Its totient is φ = 67425696.

The previous prime is 139497317. The next prime is 139497341. The reversal of 139497326 is 623794931.

It is a super-2 number, since 2×139497326² = 38919007922300552, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 5615 + ... + 17621.

It is an arithmetic number, because the mean of its divisors is an integer number (13518006).

Almost surely, 2^139497326 is an apocalyptic number.

139497326 is a deficient number, since it is larger than the sum of its proper divisors (76790770).

139497326 is a wasteful number, since it uses less digits than its factorization.

139497326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12203.

The product of its digits is 244944, while the sum is 44.

The square root of 139497326 is about 11810.8986110287. The cubic root of 139497326 is about 518.6272049603.

The spelling of 139497326 in words is "one hundred thirty-nine million, four hundred ninety-seven thousand, three hundred twenty-six".