139770667 has 2 divisors, whose sum is σ = 139770668. Its totient is φ = 139770666.

The previous prime is 139770647. The next prime is 139770713. The reversal of 139770667 is 766077931.

It is a happy number.

139770667 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (139770713) can be obtained adding 139770667 to its sum of digits (46).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139770667 is a prime.

It is not a weakly prime, because it can be changed into another prime (139770647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69885333 + 69885334.

It is an arithmetic number, because the mean of its divisors is an integer number (69885334).

Almost surely, 2^139770667 is an apocalyptic number.

139770667 is a deficient number, since it is larger than the sum of its proper divisors (1).

139770667 is an equidigital number, since it uses as much as digits as its factorization.

139770667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 333396, while the sum is 46.

The square root of 139770667 is about 11822.4645061848. The cubic root of 139770667 is about 518.9657289800.

The spelling of 139770667 in words is "one hundred thirty-nine million, seven hundred seventy thousand, six hundred sixty-seven".