53899963 has 8 divisors (see below), whose sum is σ = 58622256. Its totient is φ = 49260000.

The previous prime is 53899949. The next prime is 53899969. The reversal of 53899963 is 36999835.

It is a happy number.

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 53899963 - 2²¹ = 51802811 is a prime.

It is a super-2 number, since 2×53899963² = 5810412022802738, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53899963.

It is not an unprimeable number, because it can be changed into a prime (53899969) 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, 19213 + ... + 21838.

It is an arithmetic number, because the mean of its divisors is an integer number (7327782).

Almost surely, 2^53899963 is an apocalyptic number.

53899963 is a deficient number, since it is larger than the sum of its proper divisors (4722293).

53899963 is a wasteful number, since it uses less digits than its factorization.

53899963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41165.

The product of its digits is 1574640, while the sum is 52.

The square root of 53899963 is about 7341.6594173252. The cubic root of 53899963 is about 377.7427656486.

The spelling of 53899963 in words is "fifty-three million, eight hundred ninety-nine thousand, nine hundred sixty-three".