40261949 has 8 divisors (see below), whose sum is σ = 49553280. Its totient is φ = 31855536.

The previous prime is 40261943. The next prime is 40261999. The reversal of 40261949 is 94916204.

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 40261949 - 2¹⁶ = 40196413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40261943) 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, 221129 + ... + 221310.

It is an arithmetic number, because the mean of its divisors is an integer number (6194160).

Almost surely, 2^40261949 is an apocalyptic number.

It is an amenable number.

40261949 is a deficient number, since it is larger than the sum of its proper divisors (9291331).

40261949 is a wasteful number, since it uses less digits than its factorization.

40261949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442459.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 40261949 is about 6345.2304134681. The cubic root of 40261949 is about 342.7401097498.

The spelling of 40261949 in words is "forty million, two hundred sixty-one thousand, nine hundred forty-nine".