39689370 has 96 divisors (see below), whose sum is σ = 119688192. Its totient is φ = 8937216.

The previous prime is 39689369. The next prime is 39689381. The reversal of 39689370 is 7398693.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 45559 + ... + 46421.

It is an arithmetic number, because the mean of its divisors is an integer number (1246752).

Almost surely, 2^39689370 is an apocalyptic number.

39689370 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 39689370, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59844096).

39689370 is an abundant number, since it is smaller than the sum of its proper divisors (79998822).

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

39689370 is a wasteful number, since it uses less digits than its factorization.

39689370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 956 (or 953 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 39689370 is about 6299.9499998016. The cubic root of 39689370 is about 341.1076047209.

The spelling of 39689370 in words is "thirty-nine million, six hundred eighty-nine thousand, three hundred seventy".