47649401 has 4 divisors (see below), whose sum is σ = 47670132. Its totient is φ = 47628672.

The previous prime is 47649361. The next prime is 47649431. The reversal of 47649401 is 10494674.

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 6996025 + 40653376 = 2645^2 + 6376^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47649401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47649431) 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, 6416 + ... + 11681.

It is an arithmetic number, because the mean of its divisors is an integer number (11917533).

Almost surely, 2^47649401 is an apocalyptic number.

It is an amenable number.

47649401 is a deficient number, since it is larger than the sum of its proper divisors (20731).

47649401 is a wasteful number, since it uses less digits than its factorization.

47649401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20730.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 47649401 is about 6902.8545544579. The cubic root of 47649401 is about 362.5371212084.

The spelling of 47649401 in words is "forty-seven million, six hundred forty-nine thousand, four hundred one".