39420037 has 4 divisors (see below), whose sum is σ = 39443616. Its totient is φ = 39396460.

The previous prime is 39420023. The next prime is 39420049. The reversal of 39420037 is 73002493.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 39420037 - 2¹⁹ = 38895749 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39419987 and 39420014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39420737) 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, 9073 + ... + 12694.

It is an arithmetic number, because the mean of its divisors is an integer number (9860904).

Almost surely, 2^39420037 is an apocalyptic number.

It is an amenable number.

39420037 is a deficient number, since it is larger than the sum of its proper divisors (23579).

39420037 is a wasteful number, since it uses less digits than its factorization.

39420037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23578.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 39420037 is about 6278.5378074835. The cubic root of 39420037 is about 340.3342646918.

The spelling of 39420037 in words is "thirty-nine million, four hundred twenty thousand, thirty-seven".