1390479940555 has 8 divisors (see below), whose sum is σ = 1668608394192. Its totient is φ = 1112362308768.

The previous prime is 1390479940541. The next prime is 1390479940609. The reversal of 1390479940555 is 5550499740931.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1390479940555 - 2⁷ = 1390479940427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1390479940493 and 1390479940502.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2420049 + ... + 2938978.

It is an arithmetic number, because the mean of its divisors is an integer number (208576049274).

Almost surely, 2^{1390479940555} is an apocalyptic number.

1390479940555 is a deficient number, since it is larger than the sum of its proper divisors (278128453637).

1390479940555 is an equidigital number, since it uses as much as digits as its factorization.

1390479940555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5410925.

The product of its (nonzero) digits is 30618000, while the sum is 61.

The spelling of 1390479940555 in words is "one trillion, three hundred ninety billion, four hundred seventy-nine million, nine hundred forty thousand, five hundred fifty-five".