40620999 has 4 divisors (see below), whose sum is σ = 54161336. Its totient is φ = 27080664.

The previous prime is 40620997. The next prime is 40621033. The reversal of 40620999 is 99902604.

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

It is not a de Polignac number, because 40620999 - 2¹ = 40620997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40620991) 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, 6770164 + ... + 6770169.

It is an arithmetic number, because the mean of its divisors is an integer number (13540334).

Almost surely, 2^40620999 is an apocalyptic number.

40620999 is a deficient number, since it is larger than the sum of its proper divisors (13540337).

40620999 is a wasteful number, since it uses less digits than its factorization.

40620999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13540336.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 40620999 is about 6373.4605200001. The cubic root of 40620999 is about 343.7559309610.

The spelling of 40620999 in words is "forty million, six hundred twenty thousand, nine hundred ninety-nine".