49169904 has 80 divisors (see below), whose sum is σ = 147609600. Its totient is φ = 13812480.

The previous prime is 49169903. The next prime is 49169927. The reversal of 49169904 is 40996194.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49169903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19297 + ... + 21695.

It is an arithmetic number, because the mean of its divisors is an integer number (1845120).

Almost surely, 2^49169904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49169904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73804800).

49169904 is an abundant number, since it is smaller than the sum of its proper divisors (98439696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49169904 is a wasteful number, since it uses less digits than its factorization.

49169904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2478 (or 2472 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 49169904 is about 7012.1254980213. The cubic root of 49169904 is about 366.3530291358.

The spelling of 49169904 in words is "forty-nine million, one hundred sixty-nine thousand, nine hundred four".