10421390479 has 4 divisors (see below), whose sum is σ = 10423108080. Its totient is φ = 10419672880.

The previous prime is 10421390471. The next prime is 10421390489. The reversal of 10421390479 is 97409312401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97409312401 = 17 ⋅5729959553.

It is a cyclic number.

It is not a de Polignac number, because 10421390479 - 2³ = 10421390471 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10421390471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 849667 + ... + 861844.

It is an arithmetic number, because the mean of its divisors is an integer number (2605777020).

Almost surely, 2^10421390479 is an apocalyptic number.

10421390479 is a deficient number, since it is larger than the sum of its proper divisors (1717601).

10421390479 is an equidigital number, since it uses as much as digits as its factorization.

10421390479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1717600.

The product of its (nonzero) digits is 54432, while the sum is 40.

The spelling of 10421390479 in words is "ten billion, four hundred twenty-one million, three hundred ninety thousand, four hundred seventy-nine".