390545387 has 2 divisors, whose sum is σ = 390545388. Its totient is φ = 390545386.

The previous prime is 390545371. The next prime is 390545411. The reversal of 390545387 is 783545093.

It is a weak prime.

It is an emirp because it is prime and its reverse (783545093) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 390545387 - 2⁴ = 390545371 is a prime.

It is not a weakly prime, because it can be changed into another prime (390545317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195272693 + 195272694.

It is an arithmetic number, because the mean of its divisors is an integer number (195272694).

Almost surely, 2^390545387 is an apocalyptic number.

390545387 is a deficient number, since it is larger than the sum of its proper divisors (1).

390545387 is an equidigital number, since it uses as much as digits as its factorization.

390545387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 453600, while the sum is 44.

The square root of 390545387 is about 19762.2212061296. The cubic root of 390545387 is about 730.9547693498.

The spelling of 390545387 in words is "three hundred ninety million, five hundred forty-five thousand, three hundred eighty-seven".