46403991 has 12 divisors (see below), whose sum is σ = 68293368. Its totient is φ = 30351984.

The previous prime is 46403989. The next prime is 46404011. The reversal of 46403991 is 19930464.

46403991 is a `hidden beast` number, since 4 + 640 + 3 + 9 + 9 + 1 = 666.

It is not a de Polignac number, because 46403991 - 2¹ = 46403989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (46403911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48165 + ... + 49118.

It is an arithmetic number, because the mean of its divisors is an integer number (5691114).

Almost surely, 2^46403991 is an apocalyptic number.

46403991 is a deficient number, since it is larger than the sum of its proper divisors (21889377).

46403991 is a wasteful number, since it uses less digits than its factorization.

46403991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97342 (or 97339 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 46403991 is about 6812.0474895585. The cubic root of 46403991 is about 359.3506581723.

The spelling of 46403991 in words is "forty-six million, four hundred three thousand, nine hundred ninety-one".