39897036 has 60 divisors (see below), whose sum is σ = 109805080. Its totient is φ = 12597120.

The previous prime is 39897029. The next prime is 39897043. The reversal of 39897036 is 63079893.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (39897029) and next prime (39897043).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 39896982 and 39897000.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2916 + ... + 9396.

Almost surely, 2^39897036 is an apocalyptic number.

39897036 is a gapful number since it is divisible by the number (36) 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 39897036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54902540).

39897036 is an abundant number, since it is smaller than the sum of its proper divisors (69908044).

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

39897036 is a wasteful number, since it uses less digits than its factorization.

39897036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6516 (or 6505 counting only the distinct ones).

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

The square root of 39897036 is about 6316.4100563532. The cubic root of 39897036 is about 341.7014939183.

It can be divided in two parts, 3989 and 7036, that added together give a square (11025 = 105²).

The spelling of 39897036 in words is "thirty-nine million, eight hundred ninety-seven thousand, thirty-six".