390497587447 has 16 divisors (see below), whose sum is σ = 430266673440. Its totient is φ = 351440896000.

The previous prime is 390497587427. The next prime is 390497587451. The reversal of 390497587447 is 744785794093.

It is a cyclic number.

It is not a de Polignac number, because 390497587447 - 2³⁵ = 356137849079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390497587427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12748983 + ... + 12779575.

It is an arithmetic number, because the mean of its divisors is an integer number (26891667090).

Almost surely, 2^390497587447 is an apocalyptic number.

390497587447 is a deficient number, since it is larger than the sum of its proper divisors (39769085993).

390497587447 is a wasteful number, since it uses less digits than its factorization.

390497587447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42194.

The product of its (nonzero) digits is 213373440, while the sum is 67.

The spelling of 390497587447 in words is "three hundred ninety billion, four hundred ninety-seven million, five hundred eighty-seven thousand, four hundred forty-seven".