40978097 has 4 divisors (see below), whose sum is σ = 41931120. Its totient is φ = 40025076.

The previous prime is 40978087. The next prime is 40978123. The reversal of 40978097 is 79087904.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40978097 - 2⁶ = 40978033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40978027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 476447 + ... + 476532.

It is an arithmetic number, because the mean of its divisors is an integer number (10482780).

Almost surely, 2^40978097 is an apocalyptic number.

It is an amenable number.

40978097 is a deficient number, since it is larger than the sum of its proper divisors (953023).

40978097 is an equidigital number, since it uses as much as digits as its factorization.

40978097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953022.

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 40978097 is about 6401.4136719946. The cubic root of 40978097 is about 344.7603096030.

The spelling of 40978097 in words is "forty million, nine hundred seventy-eight thousand, ninety-seven".