139297698 has 32 divisors (see below), whose sum is σ = 313478400. Its totient is φ = 45843408.

The previous prime is 139297679. The next prime is 139297703. The reversal of 139297698 is 896792931.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12061 + ... + 20592.

It is an arithmetic number, because the mean of its divisors is an integer number (9796200).

Almost surely, 2^139297698 is an apocalyptic number.

139297698 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

139297698 is an abundant number, since it is smaller than the sum of its proper divisors (174180702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139297698 is a wasteful number, since it uses less digits than its factorization.

139297698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32743 (or 32737 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 54.

The square root of 139297698 is about 11802.4445772899. Note that the first 3 decimals coincide. The cubic root of 139297698 is about 518.3796925987.

The spelling of 139297698 in words is "one hundred thirty-nine million, two hundred ninety-seven thousand, six hundred ninety-eight".