40147461 has 8 divisors (see below), whose sum is σ = 59477760. Its totient is φ = 26764956.

The previous prime is 40147441. The next prime is 40147463. The reversal of 40147461 is 16474104.

It is a de Polignac number, because none of the positive numbers 2^k-40147461 is a prime.

It is a super-2 number, since 2×40147461² = 3223637249493042, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1486943 = 40147461 / (4 + 0 + 1 + 4 + 7 + 4 + 6 + 1).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40147463) 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, 743445 + ... + 743498.

It is an arithmetic number, because the mean of its divisors is an integer number (7434720).

Almost surely, 2^40147461 is an apocalyptic number.

It is an amenable number.

40147461 is a deficient number, since it is larger than the sum of its proper divisors (19330299).

40147461 is a wasteful number, since it uses less digits than its factorization.

40147461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1486952 (or 1486946 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 40147461 is about 6336.2024115396. The cubic root of 40147461 is about 342.4149318984.

The spelling of 40147461 in words is "forty million, one hundred forty-seven thousand, four hundred sixty-one".