40789654 has 4 divisors (see below), whose sum is σ = 61184484. Its totient is φ = 20394826.

The previous prime is 40789643. The next prime is 40789657. The reversal of 40789654 is 45698704.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 40789654.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40789657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10197412 + ... + 10197415.

It is an arithmetic number, because the mean of its divisors is an integer number (15296121).

Almost surely, 2^40789654 is an apocalyptic number.

40789654 is a deficient number, since it is larger than the sum of its proper divisors (20394830).

40789654 is a wasteful number, since it uses less digits than its factorization.

40789654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20394829.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 40789654 is about 6386.6778531565. The cubic root of 40789654 is about 344.2310227045.

The spelling of 40789654 in words is "forty million, seven hundred eighty-nine thousand, six hundred fifty-four".