40000949 has 8 divisors (see below), whose sum is σ = 42775128. Its totient is φ = 37273600.

The previous prime is 40000927. The next prime is 40000963. The reversal of 40000949 is 94900004.

It can be written as a sum of positive squares in 4 ways, for example, as 12888100 + 27112849 = 3590^2 + 5207^2 .

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 40000949 - 2²⁰ = 38952373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40000349) 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, 9932 + ... + 13365.

It is an arithmetic number, because the mean of its divisors is an integer number (5346891).

Almost surely, 2^40000949 is an apocalyptic number.

It is an amenable number.

40000949 is a deficient number, since it is larger than the sum of its proper divisors (2774179).

40000949 is a wasteful number, since it uses less digits than its factorization.

40000949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23415.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 40000949 is about 6324.6303449293. The cubic root of 40000949 is about 341.9978939259.

The spelling of 40000949 in words is "forty million, nine hundred forty-nine", and thus it is an aban number.