40398951 has 8 divisors (see below), whose sum is σ = 53910144. Its totient is φ = 26910200.

The previous prime is 40398937. The next prime is 40398961. The reversal of 40398951 is 15989304.

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 40398951 - 2⁹ = 40398439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40398901) 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, 825 + ... + 9026.

It is an arithmetic number, because the mean of its divisors is an integer number (6738768).

Almost surely, 2^40398951 is an apocalyptic number.

40398951 is a deficient number, since it is larger than the sum of its proper divisors (13511193).

40398951 is a wasteful number, since it uses less digits than its factorization.

40398951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11221.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 40398951 is about 6356.0169131304. The cubic root of 40398951 is about 343.1284244568.

The spelling of 40398951 in words is "forty million, three hundred ninety-eight thousand, nine hundred fifty-one".