40599949 has 4 divisors (see below), whose sum is σ = 43723036. Its totient is φ = 37476864.

The previous prime is 40599947. The next prime is 40599959. The reversal of 40599949 is 94999504.

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

It can be written as a sum of positive squares in 2 ways, for example, as 27510025 + 13089924 = 5245^2 + 3618^2 .

It is a cyclic number.

It is not a de Polignac number, because 40599949 - 2¹ = 40599947 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 (40599947) 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, 1561524 + ... + 1561549.

It is an arithmetic number, because the mean of its divisors is an integer number (10930759).

Almost surely, 2^40599949 is an apocalyptic number.

It is an amenable number.

40599949 is a deficient number, since it is larger than the sum of its proper divisors (3123087).

40599949 is a wasteful number, since it uses less digits than its factorization.

40599949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3123086.

The product of its (nonzero) digits is 524880, while the sum is 49.

The square root of 40599949 is about 6371.8089268276. The cubic root of 40599949 is about 343.6965420341.

The spelling of 40599949 in words is "forty million, five hundred ninety-nine thousand, nine hundred forty-nine".