39897426 has 8 divisors (see below), whose sum is σ = 79794864. Its totient is φ = 13299140.

The previous prime is 39897409. The next prime is 39897427. The reversal of 39897426 is 62479893.

It is a sphenic number, since it is the product of 3 distinct primes.

39897426 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (39897427) 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, 3324780 + ... + 3324791.

It is an arithmetic number, because the mean of its divisors is an integer number (9974358).

Almost surely, 2^39897426 is an apocalyptic number.

39897426 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

39897426 is a wasteful number, since it uses less digits than its factorization.

39897426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6649576.

The product of its digits is 653184, while the sum is 48.

The square root of 39897426 is about 6316.4409282443. The cubic root of 39897426 is about 341.7026073105.

The spelling of 39897426 in words is "thirty-nine million, eight hundred ninety-seven thousand, four hundred twenty-six".