46921909 has 8 divisors (see below), whose sum is σ = 49694400. Its totient is φ = 44210496.

The previous prime is 46921877. The next prime is 46921943. The reversal of 46921909 is 90912964.

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 46921909 - 2⁵ = 46921877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (46921409) 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, 13684 + ... + 16765.

It is an arithmetic number, because the mean of its divisors is an integer number (6211800).

Almost surely, 2^46921909 is an apocalyptic number.

It is an amenable number.

46921909 is a deficient number, since it is larger than the sum of its proper divisors (2772491).

46921909 is a wasteful number, since it uses less digits than its factorization.

46921909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30539.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 46921909 is about 6849.9568611780. The cubic root of 46921909 is about 360.6826271187.

It can be divided in two parts, 4692 and 1909, that multiplied together give a triangular number (8957028 = T₄₂₃₂).

The spelling of 46921909 in words is "forty-six million, nine hundred twenty-one thousand, nine hundred nine".