42776999 has 8 divisors (see below), whose sum is σ = 45600000. Its totient is φ = 40011192.

The previous prime is 42776983. The next prime is 42777011. The reversal of 42776999 is 99967724.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 42776999 - 2⁴ = 42776983 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42776999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42776969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12749 + ... + 15750.

It is an arithmetic number, because the mean of its divisors is an integer number (5700000).

Almost surely, 2^42776999 is an apocalyptic number.

42776999 is a deficient number, since it is larger than the sum of its proper divisors (2823001).

42776999 is a wasteful number, since it uses less digits than its factorization.

42776999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28597.

The product of its digits is 1714608, while the sum is 53.

The square root of 42776999 is about 6540.4127545591. The cubic root of 42776999 is about 349.7331271751.

The spelling of 42776999 in words is "forty-two million, seven hundred seventy-six thousand, nine hundred ninety-nine".