7900403421 has 16 divisors (see below), whose sum is σ = 11161584000. Its totient is φ = 4953527808.

The previous prime is 7900403417. The next prime is 7900403507. The reversal of 7900403421 is 1243040097.

It is a happy number.

It is not a de Polignac number, because 7900403421 - 2² = 7900403417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7900403321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15985 + ... + 126713.

It is an arithmetic number, because the mean of its divisors is an integer number (697599000).

Almost surely, 2^7900403421 is an apocalyptic number.

It is an amenable number.

7900403421 is a deficient number, since it is larger than the sum of its proper divisors (3261180579).

7900403421 is a wasteful number, since it uses less digits than its factorization.

7900403421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112148.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 7900403421 is about 88884.2135646145. The cubic root of 7900403421 is about 1991.6656022341.

The spelling of 7900403421 in words is "seven billion, nine hundred million, four hundred three thousand, four hundred twenty-one".