40621970 has 8 divisors (see below), whose sum is σ = 73119564. Its totient is φ = 16248784.

The previous prime is 40621969. The next prime is 40622017. The reversal of 40621970 is 7912604.

It can be written as a sum of positive squares in 2 ways, for example, as 40284409 + 337561 = 6347^2 + 581^2 .

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

It is a Curzon number.

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, 2031089 + ... + 2031108.

Almost surely, 2^40621970 is an apocalyptic number.

40621970 is a deficient number, since it is larger than the sum of its proper divisors (32497594).

40621970 is a wasteful number, since it uses less digits than its factorization.

40621970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4062204.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 40621970 is about 6373.5366948030. The cubic root of 40621970 is about 343.7586699742.

The spelling of 40621970 in words is "forty million, six hundred twenty-one thousand, nine hundred seventy".