39998700 has 162 divisors, whose sum is σ = 146003676. Its totient is φ = 9132480.

The previous prime is 39998687. The next prime is 39998701. The reversal of 39998700 is 789993.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (39998701) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 43647 + ... + 44553.

Almost surely, 2^39998700 is an apocalyptic number.

39998700 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39998700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73001838).

39998700 is an abundant number, since it is smaller than the sum of its proper divisors (106004976).

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

39998700 is a wasteful number, since it uses less digits than its factorization.

39998700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941 (or 924 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 39998700 is about 6324.4525454778. The cubic root of 39998700 is about 341.9914843473.

It can be divided in two parts, 399 and 98700, that added together give a palindrome (99099).

The spelling of 39998700 in words is "thirty-nine million, nine hundred ninety-eight thousand, seven hundred".