939995420 has 72 divisors (see below), whose sum is σ = 2472944544. Its totient is φ = 297489024.

The previous prime is 939995411. The next prime is 939995429. The reversal of 939995420 is 24599939.

It is an interprime number because it is at equal distance from previous prime (939995411) and next prime (939995429).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (939995429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24152 + ... + 49631.

It is an arithmetic number, because the mean of its divisors is an integer number (34346452).

Almost surely, 2^939995420 is an apocalyptic number.

It is an amenable number.

939995420 is an abundant number, since it is smaller than the sum of its proper divisors (1532949124).

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

939995420 is a wasteful number, since it uses less digits than its factorization.

939995420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73819 (or 73810 counting only the distinct ones).

The product of its (nonzero) digits is 787320, while the sum is 50.

The square root of 939995420 is about 30659.3447418564. The cubic root of 939995420 is about 979.5845177540.

The spelling of 939995420 in words is "nine hundred thirty-nine million, nine hundred ninety-five thousand, four hundred twenty".