999973420 has 24 divisors (see below), whose sum is σ = 2210468400. Its totient is φ = 378937152.

The previous prime is 999973409. The next prime is 999973421. The reversal of 999973420 is 24379999.

999973420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (999973421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1315375 + ... + 1316134.

It is an arithmetic number, because the mean of its divisors is an integer number (92102850).

Almost surely, 2^999973420 is an apocalyptic number.

It is an amenable number.

999973420 is an abundant number, since it is smaller than the sum of its proper divisors (1210494980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

999973420 is a wasteful number, since it uses less digits than its factorization.

999973420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2631537 (or 2631535 counting only the distinct ones).

The product of its (nonzero) digits is 1102248, while the sum is 52.

The square root of 999973420 is about 31622.3563321900. The cubic root of 999973420 is about 999.9911399215.

The spelling of 999973420 in words is "nine hundred ninety-nine million, nine hundred seventy-three thousand, four hundred twenty".