39494420 has 24 divisors (see below), whose sum is σ = 94786944. Its totient is φ = 13540896.

The previous prime is 39494419. The next prime is 39494437. The reversal of 39494420 is 2449493.

It is a super-2 number, since 2×39494420² = 3119618422272800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140912 + ... + 141191.

It is an arithmetic number, because the mean of its divisors is an integer number (3949456).

Almost surely, 2^39494420 is an apocalyptic number.

It is an amenable number.

39494420 is an abundant number, since it is smaller than the sum of its proper divisors (55292524).

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

39494420 is a wasteful number, since it uses less digits than its factorization.

39494420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282119 (or 282117 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 39494420 is about 6284.4586083449. The cubic root of 39494420 is about 340.5481929338.

The spelling of 39494420 in words is "thirty-nine million, four hundred ninety-four thousand, four hundred twenty".