42699399 has 4 divisors (see below), whose sum is σ = 56932536. Its totient is φ = 28466264.

The previous prime is 42699383. The next prime is 42699401. The reversal of 42699399 is 99399624.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42699399 - 2⁴ = 42699383 is a prime.

It is a super-2 number, since 2×42699399² = 3646477349922402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42699299) 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, 7116564 + ... + 7116569.

It is an arithmetic number, because the mean of its divisors is an integer number (14233134).

Almost surely, 2^42699399 is an apocalyptic number.

42699399 is a deficient number, since it is larger than the sum of its proper divisors (14233137).

42699399 is a wasteful number, since it uses less digits than its factorization.

42699399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14233136.

The product of its digits is 944784, while the sum is 51.

The square root of 42699399 is about 6534.4777144007. The cubic root of 42699399 is about 349.5215203255.

The spelling of 42699399 in words is "forty-two million, six hundred ninety-nine thousand, three hundred ninety-nine".