139870433 has 2 divisors, whose sum is σ = 139870434. Its totient is φ = 139870432.

The previous prime is 139870427. The next prime is 139870439. The reversal of 139870433 is 334078931.

It is a balanced prime because it is at equal distance from previous prime (139870427) and next prime (139870439).

It can be written as a sum of positive squares in only one way, i.e., 138109504 + 1760929 = 11752^2 + 1327^2 .

It is a cyclic number.

It is not a de Polignac number, because 139870433 - 2¹⁴ = 139854049 is a prime.

It is not a weakly prime, because it can be changed into another prime (139870439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69935216 + 69935217.

It is an arithmetic number, because the mean of its divisors is an integer number (69935217).

Almost surely, 2^139870433 is an apocalyptic number.

It is an amenable number.

139870433 is a deficient number, since it is larger than the sum of its proper divisors (1).

139870433 is an equidigital number, since it uses as much as digits as its factorization.

139870433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 139870433 is about 11826.6830937503. The cubic root of 139870433 is about 519.0891760097.

The spelling of 139870433 in words is "one hundred thirty-nine million, eight hundred seventy thousand, four hundred thirty-three".