139690898 has 8 divisors (see below), whose sum is σ = 216295680. Its totient is φ = 67592340.

The previous prime is 139690897. The next prime is 139690949. The reversal of 139690898 is 898096931.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (139690897) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1126478 + ... + 1126601.

It is an arithmetic number, because the mean of its divisors is an integer number (27036960).

Almost surely, 2^139690898 is an apocalyptic number.

139690898 is a deficient number, since it is larger than the sum of its proper divisors (76604782).

139690898 is a wasteful number, since it uses less digits than its factorization.

139690898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2253112.

The product of its (nonzero) digits is 839808, while the sum is 53.

The square root of 139690898 is about 11819.0904049339. The cubic root of 139690898 is about 518.8669832847.

The spelling of 139690898 in words is "one hundred thirty-nine million, six hundred ninety thousand, eight hundred ninety-eight".