40089970 has 8 divisors (see below), whose sum is σ = 72161964. Its totient is φ = 16035984.

The previous prime is 40089953. The next prime is 40089991. The reversal of 40089970 is 7998004.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 37344321 + 2745649 = 6111^2 + 1657^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2004489 + ... + 2004508.

Almost surely, 2^40089970 is an apocalyptic number.

40089970 is a deficient number, since it is larger than the sum of its proper divisors (32071994).

40089970 is a wasteful number, since it uses less digits than its factorization.

40089970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4009004.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 40089970 is about 6331.6640782657. The cubic root of 40089970 is about 342.2514082243.

The spelling of 40089970 in words is "forty million, eighty-nine thousand, nine hundred seventy".