40970391 has 32 divisors (see below), whose sum is σ = 72119808. Its totient is φ = 20029440.

The previous prime is 40970387. The next prime is 40970393. The reversal of 40970391 is 19307904.

It is not a de Polignac number, because 40970391 - 2² = 40970387 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40970393) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1290 + ... + 9143.

It is an arithmetic number, because the mean of its divisors is an integer number (2253744).

Almost surely, 2^40970391 is an apocalyptic number.

40970391 is a deficient number, since it is larger than the sum of its proper divisors (31149417).

40970391 is a wasteful number, since it uses less digits than its factorization.

40970391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10471.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 40970391 is about 6400.8117453960. The cubic root of 40970391 is about 344.7386973297.

The spelling of 40970391 in words is "forty million, nine hundred seventy thousand, three hundred ninety-one".