47400405 has 32 divisors (see below), whose sum is σ = 83588736. Its totient is φ = 22788864.

The previous prime is 47400377. The next prime is 47400427. The reversal of 47400405 is 50400474.

It is not a de Polignac number, because 47400405 - 2⁵ = 47400373 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5559 + ... + 11211.

It is an arithmetic number, because the mean of its divisors is an integer number (2612148).

Almost surely, 2^47400405 is an apocalyptic number.

It is an amenable number.

47400405 is a deficient number, since it is larger than the sum of its proper divisors (36188331).

47400405 is a wasteful number, since it uses less digits than its factorization.

47400405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5717.

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 47400405 is about 6884.7952039258. The cubic root of 47400405 is about 361.9045285100.

Adding to 47400405 its reverse (50400474), we get a palindrome (97800879).

The spelling of 47400405 in words is "forty-seven million, four hundred thousand, four hundred five".