42899397 has 16 divisors (see below), whose sum is σ = 60802560. Its totient is φ = 26827632.

The previous prime is 42899383. The next prime is 42899401. The reversal of 42899397 is 79399824.

It is a de Polignac number, because none of the positive numbers 2^k-42899397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42899327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2218 + ... + 9524.

It is an arithmetic number, because the mean of its divisors is an integer number (3800160).

Almost surely, 2^42899397 is an apocalyptic number.

It is an amenable number.

42899397 is a deficient number, since it is larger than the sum of its proper divisors (17903163).

42899397 is a wasteful number, since it uses less digits than its factorization.

42899397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7432.

The product of its digits is 979776, while the sum is 51.

The square root of 42899397 is about 6549.7631254878. The cubic root of 42899397 is about 350.0663738067.

The spelling of 42899397 in words is "forty-two million, eight hundred ninety-nine thousand, three hundred ninety-seven".