37989930 has 128 divisors (see below), whose sum is σ = 107412480. Its totient is φ = 8501760.

The previous prime is 37989901. The next prime is 37989937. The reversal of 37989930 is 3998973.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 37989930.

It is not an unprimeable number, because it can be changed into a prime (37989937) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 457669 + ... + 457751.

It is an arithmetic number, because the mean of its divisors is an integer number (839160).

Almost surely, 2^37989930 is an apocalyptic number.

37989930 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 37989930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53706240).

37989930 is an abundant number, since it is smaller than the sum of its proper divisors (69422550).

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

37989930 is a wasteful number, since it uses less digits than its factorization.

37989930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196.

The product of its (nonzero) digits is 367416, while the sum is 48.

The square root of 37989930 is about 6163.5971639944. The cubic root of 37989930 is about 336.1678406068.

It can be divided in two parts, 379 and 89930, that added together give a palindrome (90309).

The spelling of 37989930 in words is "thirty-seven million, nine hundred eighty-nine thousand, nine hundred thirty".