49403991 has 64 divisors (see below), whose sum is σ = 85664768. Its totient is φ = 24634368.

The previous prime is 49403983. The next prime is 49404011. The reversal of 49403991 is 19930494.

It is not a de Polignac number, because 49403991 - 2³ = 49403983 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49403941) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 676731 + ... + 676803.

It is an arithmetic number, because the mean of its divisors is an integer number (1338512).

Almost surely, 2^49403991 is an apocalyptic number.

49403991 is a deficient number, since it is larger than the sum of its proper divisors (36260777).

49403991 is a wasteful number, since it uses less digits than its factorization.

49403991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 49403991 is about 7028.7972655355. The cubic root of 49403991 is about 366.9334841229.

The spelling of 49403991 in words is "forty-nine million, four hundred three thousand, nine hundred ninety-one".