390812141 has 2 divisors, whose sum is σ = 390812142. Its totient is φ = 390812140.

The previous prime is 390812137. The next prime is 390812153. The reversal of 390812141 is 141218093.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 215355625 + 175456516 = 14675^2 + 13246^2 .

It is a cyclic number.

It is not a de Polignac number, because 390812141 - 2² = 390812137 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (390812101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195406070 + 195406071.

It is an arithmetic number, because the mean of its divisors is an integer number (195406071).

Almost surely, 2^390812141 is an apocalyptic number.

It is an amenable number.

390812141 is a deficient number, since it is larger than the sum of its proper divisors (1).

390812141 is an equidigital number, since it uses as much as digits as its factorization.

390812141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 390812141 is about 19768.9691435846. The cubic root of 390812141 is about 731.1211526848.

The spelling of 390812141 in words is "three hundred ninety million, eight hundred twelve thousand, one hundred forty-one".